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TAT Express Inc.
9722253017
4140 Langdon Rd.
Dallas TX 75241

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In this video, I go over common issues on a most common issues on a Cummins ISX 15. Some of the problems include Cummins ISX oil cooler replacement, ISX15 fuel pump failure, EGR cooler,. We talk about low oil pressure and high crankcase pressures. Most of the issues I mention in the video will be for the engine year model 2016 and below. 2017 and above may still experience issues if a good maintenance schedule is not followed. Cummins has redesigned the ISX to be more dependant on its SCR system to meet EPA guidelines. Injecting more Nox gases into the SCR system is what this engine is designed to do. If the engine has high idle times and is being used in a PTO application then there is a higher chance of aftertreatemt or engine faults due to excessive soot build up.
EGR systems are prone to failure across all platforms and Cummins is no exception. Cummins owner may experience failure on any of the EGR related components. This includes the EGR valve. EGR Cooler and EGR differential pressure sensor.

The turbocharger on the Cummins ISX15 is designed to give the driver a quicker throttle response time and to control the amount of Nox gases the engine produces. This is achieved by the turbo having internal veins to channel the exhaust pressure to control boost pressure. Over time soot can build up in between the internal veins causing them to stick or bind. This will cause a turbo actuator to fail, but it is good practice to replace the entire turbocharger if soot buildup is suspected.

Fuel pumps have been updated on newer model Cummins but, if you own a 2016 or below it would be good to update to new style fuel pump. Cummins designed the ISX15 with a highpressure common rail fuel system. The older pumps are known to fail and could cause major engine damage if operated long. Debris from fuel pump failure can contaminate the lubricating system and damage lower end bearings. This damage can lead to excessive bearing clearance causing low oil pressure and in some cases engine failure.

Check out my other video on the DD platform. Common issues with the DD15 are a great video if you have just purchased or going to purchase a DD15.

   • Most Common Issues With The DD13 DD15...  

We also have a quick component location video for the DD15 engine.

   • DD15 Engine  


#cumminsX15 #diesel

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New Shop Info: https://goo.gl/maps/HzwG98iioszjQWRP6'>https://goo.gl/maps/HzwG98iioszjQWRP6
TAT Express Inc.
9722253017
4140 Langdon Rd.
Dallas TX 75241

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