LML Injector Return lines keep failing. - Chevy and GMC Duramax Diesel . . . However, I am concerned that I may have some blockage or a bad return pressure regulator or maybe something related to the CP3 conversion The return line regulator is part of the harness i ordered, but I would like to do some testing to rule out or isolate the cause
Duramax LLY Injector Return Line Issues Fix - Ron the Parts Guy While repairing just the leaking section might seem economical, it’s often a temporary fix The LLY injector return lines are known to degrade over time, and if one section has failed, others may not be far behind
Lml no start after regulator removal - DuramaxDiesels. com The truck thinks the problem is the circuit for the #2 regulator What check on the circuit was done? If you're satisfied with that, there must be another problem yet to be discovered The attachment is specifically for my 2008 LMM, but the problem is similar for the LML also
LML Duramax No Start with Good Rail Pressure - Diagnostic Network I have cranked the engine over for a minute with #2 injector return disconnected and haven't gotten a drop out of the injector or return line I am baffled as to what would cause that being i had rail pressure during my attempts That means none of the injectors on the drivers bank were returning
FPE-2024-124 SUBJECT: LML Duramax CP3 Conversion Kit inspect the high-pressure fuel regulator for debris If debris is found in the high-pressure fuel regulator, we recommend replacing the regulator, the GM Pressure Regulator: P N 12611872 GM Injector Return Lines and Regulator: P N 12639000
LML LGH Duramax Injector Return Line Assembly (2011-2016) If the pressure is low and there are no leaks in the fuel return hose assembly, the most likely cause is the return line pressure regulator which is part of the return hose assembly
2016 Silverado 2500 Duramax Won’t Start After Fuel Repair One of the most common issues I encounter with no starts after a fuel system replacement on an LML engine is the possibility of the FPR1, FPR2, and Fuel Temp connectors being mixed up Since the connectors are identical, if they are incorrectly plugged in, they won't trigger any codes
Common Duramax Diesel Problems, Troubleshooting, and Solutions Today we’ll cover some of the most common failures you may run into with each version of the Duramax, some of the symptoms you’ll need to spot in order to properly diagnose the problem, and of course the best way to repair the problem and prevent it from happening again