@tatexpressinc TAT Express Inc

TAT Express Inc posts on TikTok about express, air, volvo, flow the most. They currently have [------] followers and [---] posts still getting attention that total [------] engagements in the last [--] hours.

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Social Influence

Social category influence automotive brands 7.41% stocks 7.41% ufc 0.93% social networks 0.93% technology brands 0.93% finance 0.93%

Social topic influence express #311, air #2614, volvo #113, flow #1513, tech #1620, matter #1494, systems 5.56%, performance 4.63%, turbo #1247, oil #1242

Top accounts mentioned or mentioned by @tatexpress

Top Social Posts

Top posts by engagements in the last [--] hours

"In todays clip I break down the real-world fuel pressure differences between the modern DD15 and the classic Series [--]. DD15 engines run 3238K PSI nearly double the 1721K PSI on a Series [--] and that pressure change affects performance diagnostics and failure patterns across the board. If youre a driver tech or fleet owner understanding this matters. Full breakdown here: https://youtu.be/roRAA_ZTaqQ TAT Express Inc. [----] Langdon Rd Dallas TX [-----] 972-225-3017 #dd15 #detroitdiesel #series60 #dieselmechanic #truckrepair Mixed martial arts Combat sports MMA UFC Kamaru Usman Islam Makhachev UFC"
TikTok Link 2025-12-04T15:53Z 18.1K followers, 11.8K engagements

"🔧⚠ CrankNo Start & Random Shut-Offs MX13 Engine Diagnostic ⚠🔧 This MX13 engine came in with starting issues the truck would crank but not start and at times would shut off unexpectedly while operating. Issues like this can be frustrating and difficult to trace without a complete diagnostic approach. 🔍 What was inspected during diagnosis: Battery condition and voltage supply Power and ground connections Wiring harnesses and connectors Fuel pressure and fuel system performance Sensor inputs and communication checks After performing all necessary tests and inspections no mechanical or fuel"
TikTok Link 2026-01-02T21:20Z 18.1K followers, 19.6K engagements

"💨⚙ Transmission Air Module Replaced Tested & Leak-Free ⚙💨 After identifying an air leak at the transmission air module during clutch service our specialist tech replaced the air module and performed a full air system test. As shown the new module holds pressure properly with no leaks present restoring stable air delivery for transmission operation. 💡 Why this repair matters: The transmission air module manages air pressure for clutch actuation and gear engagement. A properly sealed module is essential for smooth consistent shifting and overall drivability. ⚙ What replacing the air module"
TikTok Link 2026-02-09T21:18Z 18.1K followers, [----] engagements

"🎥 Turbo Power Restored VGT Actuator Replacement in Action 🚛💨 Watch the VGT vanes move freely after a brand-new turbo actuator replacement Experience smooth responsive turbo performance that keeps your engine running efficiently and powerfully. Symptoms of a Bad Turbo Actuator: ⚠ Hard or delayed acceleration ⚠ Excessive exhaust smoke ⚠ Check Engine Light with turbo codes ⚠ Vanes stuck in one position Possible Causes: 🔧 Electrical issues 🔧 Mechanical wear or binding 🔧 Carbon buildup 🔧 Heat damage Why It Matters: Proper VGT function = better performance efficiency and turbo longevity 📍"
TikTok Link 2025-09-30T22:43Z 18.1K followers, 14.4K engagements

"💧⚠ Coolant Reservoir Draining During Acceleration DD15 Engine Diagnosis ⚠💧 During inspection and live testing on this DD15 engine our specialist tech observed that the coolant reservoir was draining rapidly every time the truck accelerated. This behavior is not normal and is a strong indicator that the cooling system is experiencing internal pressure issues. 💡 What this symptom suggests: When coolant drops under load or acceleration it usually means the cooling system is being forced into an over-pressurized state. Even if no visible leaks are present something is pushing coolant out of"
TikTok Link 2025-11-28T17:37Z 18.1K followers, 670.9K engagements

"⚠ Coolant Disappearing This Air Compressor Failure Can Look Like a Blown Head Gasket Coolant keeps going low while youre driving but comes back when you shut the truck off That is NOT normal coolant loss. On modern semi-trucks (Detroit Cummins Volvo PACCAR) the air compressor is liquid-cooled. When the compressor head or casting fails compressed air gets pushed into the cooling system and forces coolant out of the engine. It looks exactly like a head gasket but it isnt. This is how blown radiator caps burst hoses EGR cooler failures and even head gaskets get destroyed by a failing air"
TikTok Link 2026-01-13T02:13Z 18.1K followers, 131.8K engagements

"Driving Habits That Kill Diesel Regens Long regens dont always mean broken parts. Excessive idling short trips light loads and stop-and-go driving prevent the aftertreatment system from getting hot enough to burn soot. Over time this leads to: Sensor contamination EGR and intake restriction Frequent or failed regens Derates and power loss If your truck is stuck in regens driving it harder wont fix it. 📍 TAT Express Heavy Duty Diesel Repair [----] Langdon Rd Dallas TX [-----] 📞 972-225-3017 📍 Google Maps: https://maps.app.goo.gl/ab7MssTdanWNQgea6 If your truck is struggling with regens or"
TikTok Link 2026-02-10T05:00Z 18.1K followers, [----] engagements

"🛞⚠ Wheel Seal Leak Causing ABS Light Peterbilt Truck ⚠🛞 During inspection on this Peterbilt truck our specialist tech found a wheel seal leaking gear oil which soaked the tone ring inside the hub. This oil contamination prevented the ABS sensor from reading wheel speed correctlycausing the ABS warning light to come on. 💡 Why this happens: The ABS system relies on a clean dry tone ring to accurately read wheel speed. When a wheel seal leaks oil migrates into the hub and coats the tone ring disrupting the signal sent to the ABS sensor. ⚙ Common causes of wheel seal leaks: Normal wear and age"
TikTok Link 2026-02-10T19:47Z 18.1K followers, 10.7K engagements

"💨⚙ Transmission Air Module Leaking During Shifting Drivability Issue Identified ⚙💨 During inspection our specialist tech found an air leak coming from the transmission air module while shifting. This module controls air pressure used by the transmission to engage and disengage gears properly. When it leaks shifting performance is directly affected. 💡 Why the transmission air module matters: The air module regulates precise air signals that allow smooth gear changes. Any air loss during shifting can cause delayed engagement harsh shifts missed gears or inconsistent operation. ⚙ Common"
TikTok Link 2026-01-15T14:39Z 18.1K followers, 46.6K engagements

"White Smoke & Misfire on Startup Cummins N14 (Cylinder #1) This is a cold start on a Cummins N14 with the exhaust manifold removed. You can clearly see: A startup misfire White smoke present Smoke concentrated at cylinder #1 White smoke on startup can point to fueling injector or combustion issues especially when one cylinder stands out from the rest. This is why visual inspection and proper diagnostics matter before throwing parts at an engine. 📍 TAT Express Heavy Duty Diesel Repair [----] Langdon Rd Dallas TX [-----] 📞 972-225-3017 If your truck is hard starting misfiring or smoking on cold"
TikTok Link 2026-02-07T21:52Z 18.1K followers, [----] engagements

"Why This Happens While the Truck Still Runs The belt overheats. It loses grip. But the engine still runs so the driver keeps going. Until coolant flow drops. And thats the moment the damage begins. This is how minor belt system issues turn into: Overheating under load Warped heads Failed EGR coolers Blown head gaskets Nothing feels wrong until its already expensive. 🎥 Full explanation here: https://youtu.be/nJsdAI2xokI 📍 TAT Express Heavy Duty Diesel Repair [----] Langdon Rd Dallas TX [-----] 📞 972-225-3017 📍 Google Maps: https://maps.app.goo.gl/ab7MssTdanWNQgea6 If your truck is running hot"
TikTok Link 2026-02-09T01:00Z 18.1K followers, [---] engagements

"💨⚙ Transmission Air Module Leak Identified During Clutch Replacement ⚙💨 While performing a clutch replacement the transmission was removed allowing our specialist tech to inspect components that are normally hard to access. During this process a leak was identified at the transmission air modulean important finding that could have caused shifting and air pressure issues if left unnoticed. 💡 Why this inspection matters: The transmission air module controls air pressure for gear engagement and clutch operation. When it leaks the transmission may not receive consistent air pressure leading to"
TikTok Link 2026-02-09T19:20Z 18.1K followers, [----] engagements

"Maintenance Matters Modern diesel engines are reliable but theyre not forgiving. Most failures dont start as catastrophic events. They start with fuel contamination skipped maintenance and excess heat. Over time that leads to: Low compression Low power Hard starts Expensive teardowns By the time you feel the problem the damage has already been happening. Maintenance isnt optional on modern engines. Its what keeps repairs from turning into rebuilds. 📍 TAT Express Heavy Duty Diesel Repair [----] Langdon Rd Dallas TX [-----] 📞 972-225-3017 📍 Google Maps: https://maps.app.goo.gl/ab7MssTdanWNQgea6"
TikTok Link 2026-02-11T12:00Z 18.1K followers, [---] engagements

"🛢⚠ Oil Leaks Identified at Pressure Sensors MP8 Engine ⚠🛢 During inspection on this MP8 engine our specialist tech found oil leaks coming from the engine pressure sensors. These sensors monitor critical readings such as oil pressure and send signals to the ECM to protect the engine. When they begin leaking its not just a messit can turn into a serious reliability issue. 💡 Why pressure sensor leaks happen: Pressure sensors seal against oil passages inside the engine. Over time heat cycles vibration and internal seal wear can cause: Cracked sensor housings Worn internal O-rings Thread seal"
TikTok Link 2026-02-11T18:05Z 18.1K followers, [----] engagements

"The Cooling System Failure That Destroys Modern Diesel Engines If you drive a modern diesel truck (DD15 X15 Volvo D13 PACCAR MX-13) this is something you need to understand. Cooling system pressure does NOT always mean a blown head gasket. On modern engines theres a failure chain that often starts somewhere else and if its missed it can quietly turn into major engine damage. This is something we see in the shop every week. Replacing parts without understanding the root cause is how small problems become expensive ones. Watch the full breakdown here: https://youtu.be/zloZX_E2IR8 I f your truck"
TikTok Link 2026-02-13T01:00Z 18.1K followers, [---] engagements

"💧🔧 Coolant Reservoir Found Loose During Inspection Small Issue Big Risk 🔧💧 During inspection our specialist tech noticed the coolant reservoir was not properly secured. It may seem like a minor detailbut over time vibration from the engine and road can cause real damage if the reservoir is left loose. While it may not look major at first continuous vibration can crack the reservoir damage mounting brackets or stress the hose connections eventually leading to coolant leaks. 💡 Why a loose coolant reservoir matters: The cooling system operates under pressure. If the reservoir shifts or"
TikTok Link 2026-02-12T19:31Z 18.1K followers, [---] engagements

"PT04 How to change brakes on a [--] Wheeler Full video https://youtu.be/THlgxcyWlmM #dieselmechanic #diesel #owneroperator #truckdriver"
TikTok Link 2023-05-11T14:26Z 18K followers, 48.7K engagements

"When should I rebuild my diesel engine/Should I rebuild my engine/Semi truck engine rebuild/Overhaul Full video Youtube https://youtu.be/HTnUz-aWQOI #dieselmechanic #diesel #owneroperator #truckdriver"
TikTok Link 2023-08-18T13:55Z 17.8K followers, [----] engagements

"💧🔥 EGR Cooler Leak Found DD15 Engine Overheating & Coolant Loss 🔥💧 This DD15 engine came in after the customer reported that the truck was running hot and losing coolant even after several parts had already been replaced at another shop. During a detailed inspection of the cooling system our specialist tech found coolant leaking directly from the EGR cooler the root cause behind the overheating and coolant loss issues. 💡 Why EGR cooler leaks happen: Thermal stress and constant exhaust heat weaken internal seals 🌡 Coolant contamination or corrosion inside the cooler Excess pressure in"
TikTok Link 2025-10-31T21:30Z [--] followers, [----] engagements

"❄🔧 A/C Compressor Inspection Operating Properly 🔧❄ In this video our specialist tech performs an A/C compressor inspection verifying proper operation of the system. As shown the compressor is engaging and functioning correctly indicating that this component is not the source of any A/C performance concerns at this time. 💡 Why inspecting the A/C compressor matters: The A/C compressor is the heart of the air conditioning system. It pressurizes and circulates refrigerant throughout the system allowing your cab to cool properlyespecially critical during long drives and hot weather. ⚙ What we"
TikTok Link 2025-12-30T19:16Z 17.8K followers, [----] engagements

"❄💧 Coolant Hose Clamp Leaks Found Winter Cooling System Inspection 💧❄ During inspection our specialist tech found coolant hose clamps leaking allowing coolant to seep from the connections. While the hoses themselves may still be in good condition loose or weakened clamps can fail under pressure especially as temperatures drop. 💡 Why coolant hose clamps matter: Hose clamps keep the cooling system sealed and pressurized. When clamps lose tension or corrode coolant leaks develop often worsening during cold weather when materials contract. ⚙ Why leaks are more common in winter: Cold"
TikTok Link 2026-01-30T16:32Z 17.8K followers, [----] engagements

"🫧⛽ Air-in-Fuel System Test Bubbles Detected D13 Engine ⛽🫧 During diagnostic testing on this D13 engine our specialist tech performed an air-in-fuel system test. As shown in the video air bubbles were present in the fuel supply confirming that air is entering the fuel system where it shouldnt. 💡 Why air in the fuel system is a problem: Diesel fuel systems are designed to operate under precise pressure. When air enters the system it disrupts fuel delivery causing inconsistent pressure and poor combustion. ⚙ Common causes of air entering the fuel system: Leaking fuel lines or loose fittings"
TikTok Link 2026-01-30T19:35Z 17.8K followers, 13K engagements

"🚨 This $60 Belt Can Kill a $40000 DD15 Engine If you own a DD15 this is one of the most important things you need to know. Theres a simple belt-driven component on these engines that can shut off coolant flow without setting a single fault code. No warning lights. No derate. Just rising engine temps and internal damage. We see this turn into overheated heads scored liners and full engine failures that couldve been prevented with a basic inspection. 👉 Watch the full breakdown here: https://youtu.be/nJsdAI2xokI If youre seeing overheating pressure issues or unexplained coolant problems get it"
TikTok Link 2026-01-31T03:00Z 17.8K followers, [----] engagements

"🚨 The Dash Never Warned ThemClip This is why so many engines get written off as a loss. The dash never warned them. The damage was happening quietly the entire time. But there were early signs: Fuel smell in the oil Surging idle Oil pressure changes Those things matter a lot. Modern diesels dont always warn you with lights or shutdowns. They show subtle changes while the engine is being attacked from the inside. This clip is from the full breakdown where I explain: The early warning signs most drivers miss What changes mean internal damage is already starting When to stop driving before"
TikTok Link 2026-02-02T18:00Z 17.9K followers, [---] engagements

"⛽⚠ Fuel Filter Cap Leak Found International A26 Diamond Engine ⚠⛽ During inspection on this International A26 Diamond engine our specialist tech identified a fuel leak coming from the fuel filter cap. This cap plays a critical role in sealing the fuel system and maintaining proper fuel pressure and even a small leak can affect engine performance. 💡 Why a leaking fuel filter cap matters: The fuel system operates under pressure. When the filter cap seal fails fuel can escape and allow air to enter the system leading to drivability issues and inconsistent fuel delivery. ⚙ Common causes of fuel"
TikTok Link 2026-02-03T14:35Z 17.8K followers, [----] engagements

"🚨 If You Wait for a Check Engine Light This is the truth most drivers learn the hard way. If you wait for a check engine light youre already too late. The trucks that get saved arent the ones that wait for shutdowns theyre the ones that get checked when something feels off. Modern diesel failures dont always announce themselves. They whisper first and by the time they scream the damage is done. This clip is from the full breakdown explaining: Why codes come too late What feels off actually means How early inspections save engines and money 👉 Watch the full video here:"
TikTok Link 2026-02-04T01:00Z 17.8K followers, [---] engagements

"Major Coolant Leak Clip This is a major coolant leak at the radiator. When coolant is leaking like this engine temperature can spike fast and continuing to drive can lead to overheating head damage or complete engine failure. If you see coolant loss steam or puddles under the truck shut it down and get it inspected immediately. 📍 TAT Express Heavy Duty Diesel Repair [----] Langdon Rd Dallas TX [-----] 📞 972-225-3017 📍 Google Maps: https://maps.app.goo.gl/ab7MssTdanWNQgea6 Catching a coolant leak early can save thousands in engine repairs. #coolantleak #radiatorleak #dieselrepair #truckrepair"
TikTok Link 2026-02-04T12:00Z 17.8K followers, [---] engagements

"🔍🛠 Injector Visual Inspection Completed D13 Engine 🛠🔍 During a detailed inspection on this D13 engine our specialist tech performed a visual inspection of injectors [--] [--] and [--]. As shown no carbon buildup was found around the injector bodies or sealing areas which is a great indicator of proper combustion and sealing inside the cylinders. 💡 Why inspecting injectors matters: Carbon buildup around injectors can be a sign of leaking injector cups poor sealing combustion issues or early engine damage. Catching these issues early helps prevent fuel dilution loss of compression misfires and"
TikTok Link 2026-02-04T16:19Z 17.8K followers, [---] engagements

"💧🔧 Multiple Coolant Leaks Identified DD15 Engine Inspection 🔧💧 During inspection on this DD15 engine our specialist tech identified multiple coolant leaks coming from critical areas of the cooling system including EGR cooler connections coolant reservoir hoses and intake-side coolant connections. These components work together to regulate engine temperature and leaks in more than one location can quickly lead to overheating and system failure. 💡 Why multiple coolant leaks happen: Aging hoses and O-rings losing elasticity over time Heat cycling causing seals and fittings to harden or"
TikTok Link 2026-02-04T16:32Z 17.8K followers, [---] engagements

"🔋❄ Thermo King APU Alternator Voltage Inspection ❄🔋 During inspection on this Thermo King APU our specialist tech performed a voltage output test on the APU alternator to verify that its charging correctly and supplying proper power to the batteries and APU system. Alternator voltage is critical for reliable APU operation especially when the truck is parked and relying on the APU for power. 💡 Why alternator voltage inspection matters: Ensures the APU is properly charging the batteries Prevents battery drain while parked Supports consistent power for HVAC electronics and hotel loads Helps"
TikTok Link 2026-02-04T17:39Z 17.8K followers, [----] engagements

"Its Not the Belt Thats the Trap Most drivers blame the belt but thats usually not what fails first. What actually wears out: Tensioners Idler pulleys Bearings Damper alignment These parts slowly lose tension and stability over hundreds of thousands of miles. The belt starts slipping just a little. It overheats. It loses grip. The engine still runs so the driver keeps going. Until coolant flow drops and thats when the real damage begins. 🎥 Full breakdown here: https://youtu.be/nJsdAI2xokI 📍 TAT Express Heavy Duty Diesel Repair [----] Langdon Rd Dallas TX [-----] 📞 972-225-3017 📍 Google Maps:"
TikTok Link 2026-02-06T01:00Z 17.9K followers, [---] engagements

"400500k Miles Is the Line By [------------] miles belts tensioners and idlers are no longer just maintenance. Theyre risk management. Because a $300 tensioner or a $60 belt is protecting a $40000 engine. We see it all the time the engine still runs so nothing feels urgent until coolant flow drops and the damage is already done. This is why belt systems need to be evaluated as a complete system not just a belt swap. 🎥 Full explanation here: https://youtu.be/nJsdAI2xokI 📍 TAT Express Heavy Duty Diesel Repair [----] Langdon Rd Dallas TX [-----] 📞 972-225-3017 📍 Google Maps:"
TikTok Link 2026-02-07T01:00Z 17.8K followers, [---] engagements

"🛢🌪 Turbocharger Oil Intrusion Found Cummins B6.7 Inspection 🌪🛢 During inspection on this Cummins B6.7 engine our specialist tech discovered oil intrusion on the intake side of the turbocharger. This finding indicates that engine oil is entering the air intake path which can affect turbo efficiency engine performance and overall system reliability. 💡 Why oil intrusion in the turbocharger matters: The turbocharger relies on clean airflow to properly compress air into the engine. When oil enters the intake side it disrupts airflow reduces turbo efficiency and can create excessive smoke or"
TikTok Link 2026-02-05T15:26Z [--] followers, [----] engagements

"🔥🌫 EGR System Found Clogged Performance & Emissions Risk 🌫🔥 During inspection our specialist tech found the EGR (Exhaust Gas Recirculation) system clogged with soot buildup. The EGR system plays a major role in controlling engine emissions and maintaining proper combustion temperatures. When it becomes restricted it can negatively impact engine performance and fuel efficiency. 💡 Why a clogged EGR system matters: The EGR system recirculates a portion of exhaust gases back into the engine to help reduce combustion temperatures and emissions. When soot buildup blocks airflow the system"
TikTok Link 2026-02-05T15:36Z 18K followers, [---] engagements

"💨🔧 Boost Leaks Found on Intake System Cummins B6.7 Engine Diagnostic 🔧💨 During inspection on this Cummins B6.7 engine our specialist tech identified boost leaks on the intake side of the system. The intake system is responsible for delivering compressed air from the turbocharger into the engine and when leaks are present the engine cannot receive the air pressure it needs to operate efficiently. 💡 Why intake boost leaks are a serious concern: Turbocharged diesel engines depend on sealed intake components to maintain proper boost pressure. Even small leaks can reduce airflow lower engine"
TikTok Link 2026-02-05T16:28Z 17.8K followers, [---] engagements

"🔧⚙ Clutch Replacement In Progress Transmission Input Shaft Inspection ⚙🔧 During this clutch replacement our specialist tech is carefully inspecting the transmission input shafta critical step before installing new clutch components. The input shaft must be in proper condition to ensure the clutch engages smoothly and transfers power correctly from the engine to the transmission. 💡 Why inspecting the input shaft matters: The input shaft supports the clutch disc and pilot bearing. Any wear scoring heat damage or excessive play can cause clutch chatter hard shifting premature clutch failure"
TikTok Link 2026-02-06T19:54Z [--] followers, [----] engagements

"The #1 Reason Regens Fail Long or incomplete regens arent random and they dont fix themselves. If your truck is dealing with: Long regens Frequent regens Incomplete regens Aftertreatment warnings or derates Driving it clearing codes or forcing regens only makes the damage worse. Get it checked before the one-box sensors or engine components fail. 📍 TAT Express Heavy Duty Diesel Repair [----] Langdon Rd Dallas TX [-----] 📞 972-225-3017 📍 Google Maps: https://maps.app.goo.gl/ab7MssTdanWNQgea6 If your truck is stuck in regen or derate call us and get it diagnosed the right way. #DieselRepair"
TikTok Link 2026-02-07T05:00Z 17.8K followers, [---] engagements

"Part [--] How to change a brake chamber Full video https://youtu.be/TTfWU3YMkao #dieselmechanic #diesel #semitruck"
TikTok Link 2023-04-09T19:18Z 18.1K followers, 42.7K engagements

"🛞🔍 Kingpins Inspection Verifying Steering Components Are Within Specs 🔍🛞 As part of a front-end inspection our specialist tech performed a kingpin inspection to ensure they are within manufacturer specifications. Kingpins are critical steering components that allow the front wheels to pivot smoothly and maintain proper alignment and control. 💡 Why kingpin inspections matter: Over time kingpins and bushings can wear due to heavy loads road conditions and lack of lubrication. Regular inspections help catch excessive play earlybefore it affects handling tire wear or safety. ⚙ What we check"
TikTok Link 2026-02-10T20:00Z 18.1K followers, [---] engagements

"💧🔧 Water Pump Leaking Cummins X15 Cooling System Inspection 🔧💧 During inspection on this Cummins X15 engine our specialist tech identified an active water pump leak. The water pump is responsible for circulating coolant throughout the engine radiator and cooling system to maintain proper operating temperature. When it begins to leak the entire cooling system is at risk. 💡 Why water pump leaks happen: Worn internal seals Bearing failure causing shaft movement Corrosion from old or contaminated coolant High mileage and heat cycling 🌡 Excessive cooling system pressure ⚙ Symptoms drivers"
TikTok Link 2026-02-12T16:58Z 18.1K followers, [---] engagements

"💧🔧 Coolant Leak Found at Heater Hose Tee Connection 🔧💧 During inspection our specialist tech identified a coolant leak at the heater hose tee connection. This small plastic or metal tee plays a big role in routing coolant through the heater circuit and back into the engine. When it cracks loosens or deteriorates coolant begins to escape under pressure. 💡 Why heater hose tee leaks happen: Age and heat cycling weakening the material 🌡 Brittle plastic fittings cracking over time Loose or worn hose clamps Excess cooling system pressure Corrosion from old or contaminated coolant ⚙ Why this"
TikTok Link 2026-02-12T19:38Z 18.1K followers, [---] engagements

"💨🔧 VPOD Pressure Out of Spec DD15 Engine Diagnostic 🔧💨 During diagnostic testing on this DD15 engine our specialist tech detected that the VPOD (Variable Pressure Output Device) pressure was out of specification. The VPOD controls air pressure to critical components such as the turbo actuator and EGR system so incorrect pressure can directly affect engine performance and emissions control. 💡 Why VPOD pressure matters: The DD15 relies on precise air regulation to control turbo vane position and EGR flow. If VPOD pressure is too low or too high the system cannot respond accurately to"
TikTok Link 2026-02-13T17:55Z 18.1K followers, [----] engagements

"What Is The Most Reliable Diesel Engine Contact us today to schedule your engine assessment and let's get your truck running like new again 🚛💨 #DieselRevival #EngineRebuildExperts #DD15Specialists https://tatexpressinc.com/contact-us/ Shop Info: https://goo.gl/maps/HzwG98iioszjQWRP6 TAT Express Inc. CALL NOW 972-225-3017 [----] Langdon Rd. Dallas TX 75241"
TikTok Link 2024-04-22T00:00Z 18.1K followers, 80.6K engagements

"🚛 Cummins X15 High Blow-By & Ticking Noise 🛠💨 This X15 came in with excessive blow-by and a ticking noisetwo major red flags for engine wear. 🔧 Possible causes: ✅ Worn piston rings or cylinder liners ✅ Valve train wear or damaged rockers ✅ Injector failure causing fuel knock ⚠ Ignoring these signs can lead to loss of power oil consumption and even engine failure Always diagnose early to avoid costly breakdowns. #CumminsX15 #DieselEngine #BlowBy #TruckRepair #EngineDiagnostics #SemiTruckMaintenance #tatexpress"
TikTok Link 2025-02-27T00:16Z 18.1K followers, 32.7K engagements

"🛠💧 Air Compressor Bypassed Confirmed Failure on This DD15 Engine 💧🛠 During the diagnostic process on this DD15 engine our specialist tech performed a series of tests to identify the cause of coolant pushing out of the reservoir during acceleration. Initial symptoms included: Coolant level dropping rapidly under load Coolant overflowing with pressure Signs that could indicate combustion gases entering the cooling system To narrow down the root cause the air compressor was bypassed a critical step to verify whether the compressor was introducing air into the coolant system. 🔍 What we found"
TikTok Link 2025-11-28T18:42Z 18.1K followers, 135.7K engagements

"What does the EGR system actually do on a diesel engine In modern inline-six engines used in semi trucks exhaust gases dont just leave the engine a portion is routed back into the intake through the EGR system. As exhaust gases drive the turbo and fresh air is cooled and fed into the intake the EGR valve diverts a controlled amount of exhaust through a cooler and reintroduces it into the intake stream. This process is called Exhaust Gas Recirculation (EGR). EGR isnt designed for performance its for emissions compliance and temperature control. When maintained properly it helps manage"
TikTok Link 2025-12-19T22:29Z 18.1K followers, 43.6K engagements

"This Isnt Just Detroit This isnt just a Detroit problem. Volvo D13. PACCAR MX-13. Cummins X15. All of them use belt-driven water pumps and belt-driven fan systems. And they all depend on the same components: Tensioners Idlers Pulleys When those parts lose tension or stability coolant flow drops no matter what badge is on the valve cover. Different engines. Same failure path. 🎥 Full breakdown here: https://youtu.be/nJsdAI2xokI 📍 TAT Express Heavy Duty Diesel Repair [----] Langdon Rd Dallas TX [-----] 📞 972-225-3017 📍 Google Maps: https://maps.app.goo.gl/ab7MssTdanWNQgea6 If your truck is"
TikTok Link 2026-02-10T01:00Z 18.1K followers, [---] engagements

"🌫🔧 EGR Valve Found Leaking Emissions & Performance at Risk 🔧🌫 During inspection our specialist tech identified a leaking EGR valve. The EGR (Exhaust Gas Recirculation) valve plays a key role in controlling exhaust gas flow back into the engine to reduce combustion temperatures and emissions. When it leaks the system can no longer regulate airflow and pressure correctly. 💡 Why a leaking EGR valve matters: A proper seal is critical for the EGR system to function correctly. When the valve or its seals fail exhaust gases escape or flow improperly leading to performance loss and emissions"
TikTok Link 2026-02-06T19:42Z 18.1K followers, 14.9K engagements

"Clearing Codes Is What Really Destroys Diesel Trucks The warning light isnt the problem its the message. Clearing codes forcing regens or resetting derates without fixing the cause only accelerates damage to: Sensors DPF and SCR components Turbo and engine hardware Derates arent fun but ignoring them turns small problems into major repairs. 📍 TAT Express Heavy Duty Diesel Repair [----] Langdon Rd Dallas TX [-----] 📞 972-225-3017 📍 Google Maps: https://maps.app.goo.gl/ab7MssTdanWNQgea6 If your truck is throwing regen or derate warnings call before the system fails. #DieselRepair #RegenProblems"
TikTok Link 2026-02-11T05:00Z 18.1K followers, [---] engagements

"💨🔧 Air Leak Found at Firewall Air Manifold Volvo Truck 🔧💨 During inspection on this Volvo truck our specialist tech identified air leaks coming from the air manifold located on the firewall. This manifold distributes compressed air to multiple systems so even a small leak in this area can affect overall air system performance. 💡 Why the firewall air manifold is important: The air manifold acts as a central distribution block for air supply lines feeding components such as suspension valves brake controls and other air-operated systems. A leak here means the entire system may struggle to"
TikTok Link 2026-02-11T18:14Z 18.1K followers, [---] engagements

"Why Coolant Pressure Is NOT Always a Head Gasket A lot of drivers are taught that coolant pressure automatically means a blown head gasket. On modern diesel engines that assumption can be expensive. This clip explains why coolant pressure is often a symptom not the root cause and why misdiagnosing it leads to repeat failures and unnecessary repairs. This is a pattern we see in the shop regularly. Modern engines dont fail the same way older ones did and diagnostics have to reflect that. Watch the full breakdown here: https://youtu.be/zloZX_E2IR8 If your truck is building pressure pushing"
TikTok Link 2026-02-13T12:00Z 18.1K followers, [---] engagements

"oolant keeps getting pushed out while youre driving but comes back when you shut the truck off That is NOT normal coolant loss. On modern semi-trucks Detroit DD15 Cummins X15 Volvo D13 and PACCAR MX-13 the air compressor is liquid-cooled. When the compressor head or casting fails compressed air gets forced into the cooling system and pressurizes it. From the outside it looks exactly like a blown head gasket. But heres the part most people dont know That compressor failure disrupts coolant flow and creates hot spots in the cylinder head especially on cylinders [--] and [--] which get coolant last."
TikTok Link 2026-01-17T01:24Z 18.1K followers, 23K engagements

"🔥🌫 EGR Cooler Severely Clogged Replacement Required 🌫🔥 During inspection our specialist tech found the EGR cooler extremely clogged with heavy soot buildup restricting exhaust gas flow beyond serviceable limits. Due to the severity of the restriction replacement was required to restore proper EGR operation and protect the engine and emissions system. 💡 Why a severely clogged EGR cooler is critical: The EGR cooler lowers exhaust gas temperatures before gases re-enter the engine. When it becomes heavily clogged exhaust flow is restricted causing excessive backpressure poor combustion"
TikTok Link 2026-02-09T17:01Z 18.1K followers, [---] engagements

"🌫🔍 Delta Ports Inspection No Soot Buildup Found 🔍🌫 During inspection our specialist tech checked the delta pressure sensor ports (delta ports) to verify proper exhaust flow readings. As shown the ports were found clean and free of soot buildup allowing accurate pressure measurements across the system. 💡 Why delta ports matter: Delta pressure ports measure the difference in exhaust pressure before and after components like the DPF or EGR system. If these small passages become clogged with soot the sensor can send incorrect data to the ECM. ⚙ What clogged delta ports can cause: False high"
TikTok Link 2026-02-13T18:15Z 18.1K followers, 12.1K engagements

"🛢🔧 Rocker Box Leak Found DD15 Engine Inspection 🔧🛢 During inspection on this DD15 engine our specialist tech identified oil leaks coming from the rocker box area. The rocker box (cam housing) seals the top of the engine and protects critical components like the camshafts rocker arms and valve train. 💡 Why a rocker box leak matters: The rocker box contains engine oil that lubricates the entire top end. When the gasket fails or sealing surfaces weaken oil begins to seep out and can travel down the side of the engine sometimes making it look like a rear main or oil pan leak. ⚙ Common causes"
TikTok Link 2026-02-13T19:12Z 18.1K followers, 10.6K engagements

"Prompt and Reliable Service Competitive Prices Transparent Communication Customer Satisfaction Guaranteed 📞 Call Now to Schedule Your Appointment Don't wait until that engine light becomes a cause for concern. Give us a call today at 972-225-3017 to book your truck's next service appointment. Our friendly staff is ready to assist you and get your truck back on the road in prime condition. https://tatexpressinc.com/contact-us/ Shop Info: https://goo.gl/maps/HzwG98iioszjQWRP6 TAT Express Inc. CALL NOW 972-225-3017 [----] Langdon Rd. Dallas TX 75241"
TikTok Link 2024-04-22T15:00Z 17.5K followers, [----] engagements

"Full Video https://youtu.be/V-9gNEs82K4 🚛💨 Stuck with a Sputtering Diesel 🛠 Drive into Dallas's #1 Truck Repair Shop 🌟 Fast Reliable and Expert Repairs 👨🔧 Certified Diesel Mechanics on Site 🕒 Express Service - Get Back on the Road Quicker 🛣 Serving All Truck Models 📍 https://goo.gl/maps/HzwG98iioszjQWRP6 📞 Call us today. 972-225.3017 Dont let a breakdown slow you down. Trust Dallas's trusted experts to rev up your engine's performance. Drive in or dial-up NOW 🚚🔧 #DallasTruckRepair #DieselExperts #TruckService #ontheroadagain https://tatexpressinc.com/contact-us/ Shop Info:"
TikTok Link 2024-04-27T16:28Z 17.6K followers, [----] engagements

"DD15 Rebuild Why choose us Because we're not just any shop we're the BEST in the business when it comes to DD15 rebuilds Our team of skilled technicians knows these engines inside out ensuring top-notch quality and performance every time. 💯🔩 Shop Info: https://goo.gl/maps/HzwG98iioszjQWRP6 TAT Express Inc. 972-225-3017 [----] Langdon Rd. Dallas TX [-----]. Don't just take our word for it see it for yourself Hit play and let the engine rebuild magic begin 🎥🔧 #DD15Rebuild #TruckShopExcellence #EngineMagic"
TikTok Link 2024-05-16T20:45Z 18K followers, 38.4K engagements

"ECM Failures On Semi Trucks Stay safe on the road with TAT Express Inc. https://tatexpressinc.com/contact-us/ Shop Info: https://goo.gl/maps/HzwG98iioszjQWRP6 TAT Express Inc. CALL NOW 972-225-3017 [----] Langdon Rd. Dallas TX 75241"
TikTok Link 2024-09-03T18:20Z 17.7K followers, [----] engagements

"Paccar MX13 Common Issues"
TikTok Link 2024-10-27T15:44Z 17.8K followers, 97.9K engagements

"EGR EXPLAINED#diesel #truck #mechanic #truckdriver"
TikTok Link 2024-11-10T15:15Z 17.7K followers, [----] engagements

"🚛 Clutch Slipping on a Semi-Truck Watch This 🛠⚙ In this clip were demonstrating a classic symptom of a slipping clutchthe RPMs rise but the trucks speed doesnt increase almost like its in neutral. This is a clear sign that the clutch isnt fully engaging causing power loss and inefficient performance. 🔧 Common signs of a slipping clutch: ❌ RPMs increase without acceleration under load ❌ Loss of power especially on inclines ❌ Burning smell from overheating clutch material ❌ Difficulty maintaining speed or heavy throttle response with no gain 🛠 Possible causes: ✔ Worn clutch disc due to high"
TikTok Link 2025-03-16T16:35Z 17.6K followers, [----] engagements

"🛢🔩 Spinning Drain Plug Dont Miss This DD15 Oil Pan Defect ⚠🧰 Working on a GHG17 or newer DD15 Theres a known issue with the oil pan drain plug insertespecially on part number DDE A4730103413. You go to remove the plug and it just spins. Or worseyou cant torque it down. Thats not your fault. Its a design flaw in the oil pan itself. Heres whats really happening: 🧱 The insert inside the pan starts to spin 💧 You get seeping weeping or full-blown leaking 🔧 And if that happens you have to replace the entire oil pan Want to know if youve got the updated version Look for a small asterisk *"
TikTok Link 2025-05-06T12:00Z 17.8K followers, [----] engagements

"Quick EGR valve actuator test on this DD15 👨🔧💨 Poor fuel economy DPF issues Before replacing parts we test the system right 💯 Dont waste time guessing get it fixed right the first time. 📍TAT Express Dallas TX 📞 972-225-3017 #DD15 #DetroitDiesel #EGRvalve #DieselMechanic #TruckRepair #DPFissues #NoPower #CheckEngineLight #OwnerOperator #TruckTok #DieselLife #TruckDown #TATExpress #FleetMaintenance #SemiTruckRepair #DallasTruckRepair #dieseldiagnostics"
TikTok Link 2025-07-28T14:41Z 17.8K followers, [----] engagements

"💨 Boost Leak Alert 🔧🚛 Mack & Volvo Clamp Failure ❌ One of the most common boost pressure issues we see on Mack and Volvo engines These factory pressed clamps on the charge air system. Over time they begin to leak under load causing loss of power poor fuel economy and aftertreatment problems down the road. 📉💥 In this clip our techs uncover a worn-out clamp causing a major air leak a simple part with serious impact if ignored. 👨🔧🧩 📍 TAT Express [----] Langdon Rd Dallas TX [-----] 📞 Call: 972-225-3017 🔗 Find us on Google 👉 Losing power Hearing whistling under load Let our diesel experts"
TikTok Link 2025-08-03T17:32Z 17.6K followers, 293.4K engagements

"🚛🔧 Customer Reported Popping Noise When Turning Heres What We Found 🔧🚛 A customer brought in this truck reporting a popping noise when turning the wheel halfway to each side. Our specialist tech performed a full inspection of the front end and pinpointed the issue: the driver-side leaf springs were squeaking on turns and showing signs of flattening. 💡 Possible causes of leaf spring wear or squeaking: Normal wear and tear over high mileage Corrosion or rust weakening the spring leaves 🌧 Overloading the truck beyond weight limits 🚛💨 Worn or dry bushings causing friction and noise ⚙ ⚠"
TikTok Link 2025-10-03T21:24Z 17.6K followers, 89.7K engagements

"🛢⛽ Fuel & Oil Leak Found on Fuel Lift Pump DT466E Engine Inspection ⛽🛢 During inspection of a DT466E engine our specialist tech discovered fuel and oil leaking around the fuel lift pump. After carefully checking the system it was confirmed that the new replacement pump from the dealership was defective allowing fuel to leak externally and mix with oil where it shouldnt. 💡 Important to know: The fuel lift pump is designed to deliver fuel from the tank to the injection system. Inside the pump there are separate chambers for oil lubrication and fuel pressure they should never mix. If fuel"
TikTok Link 2025-10-07T22:48Z 17.8K followers, [----] engagements

"💡⚙ Headlights Restored After Electrical Repairs Back to Working Condition ⚙💡 In this video you can see the headlights fully working again after our specialist tech repaired several electrical issues. During diagnostics we found a burnt fuse corroded connectors and a couple of damaged cables that were preventing the headlights from operating correctly. After replacing the fuse performing a thorough cleaning and electrical restoration the lighting system was brought back to full functionality meeting proper voltage and current flow across all connections. 💡 Why corrosion and wiring damage"
TikTok Link 2025-10-16T16:38Z 17.7K followers, [----] engagements

"🧰⚙ Cam Caps Reinstalled & Torqued to Spec DD15 Engine Service ⚙🧰 In this video our specialist tech is completing the reinstallation of cam caps after resealing the rocker box on this DD15 engine. Each cam cap is carefully reinstalled and torqued to factory specifications ensuring proper alignment and oil flow across the camshaft. 💡 Why this step is critical: Cam caps are line-bored with the cylinder head meaning each one must be returned to its exact original position and tightened to the correct torque. Even a small misalignment can cause uneven camshaft wear poor lubrication or valve"
TikTok Link 2025-10-16T21:25Z 17.7K followers, [----] engagements

"⚙🧰 PTO Pump Inspection Checking for Shaft & Internal Damage 🧰⚙ In this video our specialist tech performs a detailed inspection of a PTO (Power Take-Off) pump verifying the shaft condition and internal components for any signs of wear or damage. The PTO system is essential for transferring engine power to auxiliary equipment any issue here can affect hydraulic systems transmissions or other connected functions. 💡 Why PTO pump inspections matter: Over time heat vibration and contamination can wear the internal gears and bearings 🛠 Oil contamination or low lubrication levels accelerate"
TikTok Link 2025-10-28T20:34Z 18K followers, [----] engagements

"DD15s Silent Killer 🧨 The $10 O-Ring That Destroys Engines 💀 Every DD15 engine has a hidden weak spot two tiny O-rings that can wipe out your oil pressure and wreck your bottom end. 🚛 Most drivers miss this until its too late. 💧 The fix Replace those seals before they harden and leak. 📉 Dont let a $10 part destroy a $40000 engine. 👉 Watch the full breakdown here: 🎬 Full Video: DD15s Hidden Oil Pressure Killer https://youtu.be/AntZWzlyKYA 📍 TAT Express Inc Diesel Diagnostics & Repair Dallas TX 📞 972-225-3017 🌐 TATExpressInc.com #DD15 #DetroitDiesel #DieselMechanic #TATExpress"
TikTok Link 2025-11-02T18:33Z 18K followers, 77.6K engagements

"If your DD15 shows low oil pressure flickering warning lights or a clattering noise at idle dont ignore it it could be the O-rings on the pickup tube bleeding off pressure. 🚛 In this clip I break down the real symptoms weve seen including a truck that got towed in with a damaged bottom end after running low on pressure. 🔧 Anytime the oil pan or pump is serviced replace those O-rings. Cheap insurance for a $40000 engine. 🎬 Full video: 👉 DD15s Hidden Oil Pressure Killer The $10 O-Ring That Destroys Engines https://youtu.be/AntZWzlyKYAsi=lAnPAaUNJM_i3FVO 📍 TAT Express Inc Diesel Diagnostics"
TikTok Link 2025-11-03T17:00Z 17.7K followers, [----] engagements

"💨🔥 Before & After EGR Cooler Cleaning on D13 Engine 🔥💨 Take a look at this before and after Our specialist tech performed a complete EGR cooler cleaning on this Volvo D13 engine after finding it severely clogged with soot buildup. Before cleaning the EGR cooler was restricted preventing exhaust gases from cooling properly and causing the truck to request frequent regenerations. The delta pressure sensor and intake sensor were also found clogged due to restricted airflow. 💡 Why this happens: Excessive soot from incomplete combustion or poor fuel quality Skipped EGR or DPF maintenance"
TikTok Link 2025-11-04T16:47Z 17.8K followers, [----] engagements

"🛢🔧 Oil Leak Found at Cam Housing DD15 Engine Inspection 🔧🛢 In this video you can clearly see the cam housing on this DD15 engine leaking oil and the leak has already traveled downward running along the engine block and accumulating at the bottom. When a cam housing leak spreads like this it often hides other potential leaks and creates a much bigger mess than what you see on the surface. 💡 Why cam housing leaks happen: Hardened or worn gasket from heat cycles 🌡 Old silicone or improper sealing from previous repairs Engine vibration creating gaps over time High mileage wear around the"
TikTok Link 2025-11-10T21:51Z 17.8K followers, 49K engagements

"⚙🛢 Metal Pieces Found Inside Oil Pan Crankshaft Gear Damage on MX13 Engine 🛢⚙ While removing the oil pan on this MX13 engine our specialist tech discovered metal fragments inside the oil pan a clear sign of internal component failure. After a detailed inspection it was determined that the crankshaft gear idler gear and additional internal gears had broken teeth (tusks) confirming the source of the metal pieces found earlier. 💡 Possible causes of crankshaft gear and internal gear damage: Low or inconsistent oil pressure leading to poor lubrication and metal friction 🛢 Contaminated or"
TikTok Link 2025-11-12T20:55Z 17.6K followers, [----] engagements

"🔥🚛 Turbocharger Failure Confirmed PACCAR MX-13 Engine 🚛🔥 Customer Concern: Black Smoke & Low RPM This PACCAR MX13 came in with two major symptoms: ➡ Excessive black smoke ➡ Engine RPMs not climbing as they should After running several diagnostic tests our specialist tech pinpointed the root cause: a failed turbocharger. 🎥 As shown in the video the turbo actuator vanes are stuck meaning the turbo cannot open and regulate airflow into the engine. When the vanes dont move the engine receives very little boost causing: ⚠ Why this causes black smoke: When the turbo doesnt supply enough air"
TikTok Link 2025-12-05T15:26Z 17.7K followers, 13.2K engagements

"🔧🚛 Fifth Wheel Rebuilt Safe & Secure Coupling Restored 🚛🔧 During inspection our specialist tech identified excessive wear and play on this fifth wheel assembly which can compromise trailer coupling and overall driving safety. To restore proper operation a full fifth wheel rebuild was performed ensuring all internal components are functioning correctly and locking as designed. 💡 Why a fifth wheel rebuild is important: The fifth wheel is responsible for securely connecting the tractor to the trailer. Over time constant load vibration lack of lubrication and wear can cause internal"
TikTok Link 2026-01-02T14:03Z 17.7K followers, [----] engagements

"⚙🔧 APU Service Completed System Running Properly 🔧⚙ This trucks APU service has been completed and the unit is now running properly and efficiently. Regular APU maintenance is essential to keep the system reliable reduce engine idle time and ensure comfort while parked. 💡 What an APU service helps prevent: An APU operates independently from the main engine so proper servicing keeps it ready to power climate control and electrical systems without unnecessary wear. Routine service helps prevent: Hard starts or no-start conditions Excessive fuel consumption Overheating or shutdowns Electrical"
TikTok Link 2026-01-07T19:01Z 17.5K followers, [----] engagements

"🔌⚡ Inverter Installed & Working Properly Power Restored Onboard ⚡🔌 After completing the inverter installation this unit was tested and confirmed to be working properly delivering stable power to onboard accessories and equipment. A correctly installed inverter ensures safe reliable electrical power without stressing the trucks batteries or charging system. 💡 Why proper inverter operation matters: An inverter converts DC battery power into usable AC power for items like refrigerators chargers microwaves tools and electronics. When installed and wired correctly it provides convenience and"
TikTok Link 2026-01-09T21:59Z 17.6K followers, [----] engagements

"⚠ DD15 Surge Idle This $300 Valve Can Destroy Your Entire Fuel System ⚠ Is your DD15 surge idling hunting at idle or throwing rail pressure codes This video explains one of the most overlooked failure points inside the DD15 fuel system the Quantity Control Valve (QCV) and how it can quietly turn into a full fuel-system meltdown. On a DD15 the QCV controls how much fuel enters the high-pressure pump. When this valve sticks or glitches the pump becomes starved and begins to cavitate. That cavitation causes internal metal wear that spreads through the fuel rail and injectors often turning what"
TikTok Link 2026-01-12T03:34Z 18K followers, [----] engagements

"Why Dirty Diesel Destroys DD15 Fuel Pumps ⚠ Metal-on-Metal Failure Explained This is the part most drivers never hear On a Detroit DD15 the fuel pump is lubricated by the diesel fuel itself. Inside the pump cam-driven rollers and pistons ride on precision surfaces that are supposed to stay separated by a thin film of clean fuel. But when contaminated fuel enters the system: That lubrication film breaks down Rollers start touching metal Heat and friction spike And the pump begins shedding metal into the entire fuel system Once that happens its no longer just a bad pump It becomes injector"
TikTok Link 2026-01-14T16:36Z 18K followers, [---] engagements

"💨🚛 Trailer Air Lines Leaking Service & Supply Lines Identified 🚛💨 During inspection our specialist tech found air leaks on the trailer air supply and service lines (3-way connections). These air lines are critical for proper trailer brake operation and any leak in this area is a serious safety concern. 💡 Why these air lines matter: The supply (red) and service (blue) lines control how air is delivered to and applied at the trailer brakes. When leaks are present the trailer cannot brake correctly or consistently. ⚙ Common causes of air line leaks: Aged or cracked air hoses Chafing against"
TikTok Link 2026-01-15T15:20Z 17.8K followers, [----] engagements

"🚫 Surge Idle Isnt Just a Sensor Heres What It Really Means Most drivers and even some shops think surge idle is just a bad sensor air in the fuel or something electronic. So they clear codes maybe replace a valve and send the truck back on the road. What they dont realize is that on a DD15 surge idle is often the first warning sign that the high-pressure fuel pump is being starved and starting to destroy itself internally. By the time hard faults show up the damage is usually already done. This is why guessing and parts swapping can turn a small issue into a $20000+ fuel system failure. 📍"
TikTok Link 2026-01-19T16:02Z 17.5K followers, [---] engagements

"🚨 DD15 Oil in Fuel This Hidden Fuel Pump Failure Is Destroying Engines 💥 If youre adding oil and cant explain where its going this video is for you. In this breakdown I explain a commonly missed DD15 failure where engine oil gets pulled into the fuel system through the high-pressure fuel pump. When the internal camshaft seal fails oil migrates into the low-pressure fuel side contaminates the fuel tanks injectors EGR system sensors and aftertreatment. This is NOT an air compressor issue. This is NOT a head gasket. And there is NO repair other than replacing the fuel pump. I walk through: How"
TikTok Link 2026-01-20T00:47Z 17.5K followers, [----] engagements

"How the One Box Aftertreatment System REALLY Works DOC DPF SCR Explained Most drivers and even some techs misunderstand how the modern one-box aftertreatment system actually works and that misunderstanding leads to repeat failures constant regens derates and unnecessary parts replacement. In this video I break down step-by-step how exhaust flows through the one-box system starting after the turbo how fuel dosing is used to raise exhaust temperature what the DOC actually does how soot is trapped and oxidized in the DPF and how DEF and the SCR reduce NOx before exhaust exits the system. This"
TikTok Link 2026-01-22T16:07Z 17.5K followers, [----] engagements

"⚠ Replacing the QVC Doesnt Fix This Heres Why. We see guys replace just the QVC because its cheaper. Sometimes the truck runs better for a week. Sometimes for a month. But once the high-pressure fuel pump has started shedding metal the damage is already done. The QVC didnt cause the failure it revealed it. Thats why replacing the valve alone often delays the inevitable instead of fixing the problem. This is where proper diagnostics matter more than cheap parts. 📍 TAT Express Dallas Diesel Repair [----] Langdon Rd Dallas TX [-----] ☎ 972-225-3017 We specialize in Detroit Cummins PACCAR and Volvo"
TikTok Link 2026-01-22T16:18Z 17.5K followers, [----] engagements

"⚠🚛 Throttle Pedal Not Responding Driveability Issue Identified 🚛⚠ This truck came in with a throttle pedal not responding concern creating a serious drivability and safety issue. When the throttle pedal doesnt communicate correctly with the engine the truck may not accelerate as commanded or may not respond at all. 💡 Why a throttle pedal can stop working: Faulty accelerator pedal position (APP) sensor Damaged or loose wiring and connectors Corrosion inside the pedal connector Internal electronic failure within the pedal assembly Communication issues between the pedal and ECM Voltage or"
TikTok Link 2026-01-22T18:36Z 17.6K followers, 33.4K engagements

"⚖ When a QVC Replacement Makes Sense And When Its a Gamble. This is why context matters. On low-mileage trucks a QVC replacement can make sense and sometimes solves the issue. But on higher-mileage DD15s weve seen over and over that replacing just the valve is gambling with the entire fuel system. Once wear and contamination start a cheap fix doesnt reset the clock it just delays the failure. This is why mileage symptoms and proper diagnostics matter more than one part being cheaper. 📍 TAT Express Dallas Diesel Repair [----] Langdon Rd Dallas TX [-----] ☎ 972-225-3017 📍 Google Maps:"
TikTok Link 2026-01-23T15:41Z 18K followers, [----] engagements

"🚨 DD15 Surge Idle or Rail Codes Dont Wait on This. If your DD15 is surge idling hard starting to lose power or throwing rail pressure codes do not ignore it. Get it diagnosed by someone who understands whats happening inside the fuel pump not just what a scanner says in the description or pinned comment. These failures dont get cheaper with time. They get expensive fast if you wait. 📍 TAT Express Dallas Diesel Repair [----] Langdon Rd Dallas TX [-----] ☎ 972-225-3017 We specialize in Detroit Cummins PACCAR and Volvo diagnostics aftertreatment and heavy diesel repair. If youre in our area call"
TikTok Link 2026-01-24T17:54Z 17.6K followers, [----] engagements

"⛽🔍 Fuel Pressure Test Performed DD15 Engine (Post Injector Repair) 🔍⛽ After replacing a failed fuel injector on cylinder #4 on this DD15 engine our specialist tech performed a fuel pressure test to verify proper system operation. As shown in the video fuel pressure remained steady and within specification throughout the test confirming the repair was successful. 💡 Why a fuel pressure test is important after injector replacement: Fuel injectors directly affect rail pressure and fuel delivery. A faulty injector can cause pressure fluctuations poor combustion misfires or performance issues."
TikTok Link 2026-01-28T18:28Z 17.6K followers, [----] engagements

"🚿⚠ Washer System Failure Washer Pump Leak Identified ⚠🚿 During inspection our specialist tech found the windshield washer pump leaking which was preventing the washer system from spraying properly. When the washer pump housing or seals fail the system cannot build enough pressure to send washer fluid to the nozzles even if the reservoir is full. 💡 Why this affects washer operation: The washer pump is responsible for pressurizing and delivering washer fluid to the windshield. A leak at the pump allows fluid to escape before it reaches the lines resulting in weak spray or no spray at all. ⚙"
TikTok Link 2026-01-28T19:10Z 17.6K followers, [----] engagements

"🚨 Modern Diesels Dont Fail Loudly They Fail Silent Let me show you what I mean. On modern diesel engines Detroit Cummins Volvo PACCAR there are multiple systems that can damage the engine without triggering a shutdown. No alarms. No dramatic failure. Just slow silent damage while the truck keeps running. Thats why we see engines come in running fine and leave needing major internal repairs. This clip is part of the full breakdown explaining: Which systems cause silent damage Why ECMs dont always protect the engine What drivers should watch for before its too late 👉 Watch the full video"
TikTok Link 2026-01-30T03:00Z 17.6K followers, [----] engagements

"Why Coolant Leaks Keep Coming Back After You Fix One A lot of drivers think repeat coolant leaks mean the repair was done wrong. Most of the time thats not the case. When you fix one coolant leak system pressure changes. That pressure exposes weak points that were already thereespecially on modern trucks where coolant runs through the engine EGR cooler oil cooler transmission heat exchanger air compressor and more. Add plastic coolant lines aluminum components and thermal cycling and its why one repair often turns into two or three. This is exactly what we see in the shop every week. 📍 TAT"
TikTok Link 2026-02-02T15:57Z 17.7K followers, [----] engagements

"🔥⛽ Injector [--] Carbon Buildup Found D13 Engine Inspection ⛽🔥 During inspection on this D13 engine our specialist tech identified Injector [--] with carbon buildup past the sealing surface of the injector cup. This condition indicates that combustion gases are escaping where the injector should be properly sealed a problem that can affect engine performance and long-term reliability. 💡 Why carbon past the injector cup seal is a concern: The injector cup creates a tight seal between the injector and the cylinder head. When that seal fails hot combustion gases travel upward leaving carbon"
TikTok Link 2026-02-03T14:21Z 17.8K followers, [---] engagements

"🔍⛽ Injector Cup Inspection D13 Engine Diagnostic ⛽🔍 During inspection on this D13 engine our specialist tech performed a close inspection of the injector cups to verify proper sealing and rule out any combustion gas or fuel leakage into the cooling and fuel systems. 💡 What injector cups do: Injector cups act as a sealed barrier between the injector and the cylinder head. They prevent combustion gases fuel and coolant from mixing making them a critical component for engine performance and durability. ⚙ Why injector cup inspections are important: Over time injector cups can wear crack or"
TikTok Link 2026-02-03T14:29Z 17.8K followers, [---] engagements

"Water in Your Air System Can Break a Manual Transmission This isnt an air pressure issue its an air contamination issue. On Eaton Fuller FR and FRO manual transmissions failing to service the air dryer or drain water from the tanks allows moisture to travel into the air module and range piston circuit. Once contamination enters the system drivers experience delayed shifts missed range changes grinding and inconsistent operation. At that point seals wont fix it the range housing must be removed and cleaned correctly. 📍 TAT Express Heavy Duty Diesel Repair [----] Langdon Rd Dallas TX [-----] 📞"
TikTok Link 2026-02-04T04:00Z 17.8K followers, [---] engagements

"No Codes No Warning Engine Destroyed A slipping or failed belt doesnt just strand you it can silently destroy an engine under load. When coolant stops moving: Metal temps spike Cylinder liners overheat Heads warp EGR coolers crack Head gaskets let go Thats how a running truck turns into a $30000 engine failure. This is why belt condition tension and cooling system health matter more than most drivers realize. 🎥 Watch the full breakdown here: https://youtu.be/nJsdAI2xokI 📍 TAT Express Heavy Duty Diesel Repair [----] Langdon Rd Dallas TX [-----] 📞 972-225-3017 📍 Google Maps:"
TikTok Link 2026-02-05T01:00Z 17.8K followers, [---] engagements

"⚙💧 New PTO Pump Installed Hydraulic Power Restored 💧⚙ In this video you can see the new PTO pump installed and fully operational. After replacing the worn-out pump the system was tested and as you can see the hydraulic cylinders are now lifting smoothly with full pressure and power. Originally the PTO was engaging but the hydraulic cylinders werent moving. After performing a detailed inspection our specialist tech found the PTO pump shaft was severely worn preventing the system from building the hydraulic pressure needed to lift. 💡 Common causes of PTO pump shaft damage: Wear and tear from"
TikTok Link 2025-10-29T21:30Z 18K followers, [----] engagements

"Follow distance while driving on highway. Follow distance of a semi-truck. Semi-trucks need space. Shop Info: https://goo.gl/maps/HzwG98iioszjQWRP6 TAT Express Inc. CALL NOW 972-225-3017 [----] Langdon Rd. Dallas TX [-----] #diesel #mechanic"
TikTok Link 2024-01-30T03:15Z 18.1K followers, [---] engagements

"🔥🚨🚛 How A DD15 Suppose to Sound 🔥🚨🚛 ✅ After replacing the cylinder head exhaust camshaft cam housing and fuel pump this DD15 is back to life. No leaks. No codes. Just smooth power. 📍 TAT Express [----] Langdon Rd Dallas TX 📞 Call: 972-225-3017 🛠 Keeping You Rolling #DD15 #CylinderHeadReplacement #SemiTruckRepair #DieselEngineRepair #BeforeAndAfter #TATExpress"
TikTok Link 2025-04-16T19:12Z 18.1K followers, [----] engagements

"🔧🚛 EGR & Turbo Actuator Check Paccar MX13 🛠🔥 Our tech is checking for binding by manually moving the actuator arms for the EGR valve and turbocharger on this Paccar MX13. This step helps confirm that components move freely and arent sticking a key part of diagnosing airflow and emissions issues. ✅ 👉 If your truck is losing power throwing fault codes or struggling with aftertreatment performance it could be linked to restricted movement in these systems. A proper check can save you time money and breakdowns on the road. 📍 TAT Express Dallas TX [----] Langdon Rd Dallas TX [-----] 📞"
TikTok Link 2025-08-19T14:42Z 18.1K followers, 12.7K engagements

"💧🔥 Coolant Leak in DD15 EGR Cooler + DPF Inspection 🚛🔧 Our tech found a coolant leak in the EGR cooler on this DD15. To ensure no further damage was missed we also pulled the DPF filter for inspection. 🔎 Why this matters: Coolant leaks in the EGR cooler can cause engine overheating ⚠ Coolant entering the exhaust system can damage the DPF and aftertreatment system 💨 Regular inspections prevent costly repairs and downtime 💸 ✅ At TAT Express we dont just fix the leak we check related systems like the DPF filter to make sure your truck is ready for the road. 👉 If you see coolant loss"
TikTok Link 2025-09-08T15:13Z 18.1K followers, [----] engagements

"🛢⚠ Milky Oil Found on Oil Cap Cummins X15 Engine Inspection ⚠🛢 During inspection on this Cummins X15 engine our specialist tech found milky oil mix residue on the oil cap. This condition is a sign that moisture is mixing with engine oil which should never be ignored. While the engine does have some blow-by it is still an important factor to consider when diagnosing oil contamination. 💡 Possible causes of milky oil on the oil cap: Moisture buildup from short trips or extended idle time Condensation inside the crankcase that doesnt fully burn off Blow-by allowing moisture and combustion"
TikTok Link 2025-12-26T14:26Z 18.1K followers, 13.6K engagements

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