LLY fuel shim
Doing the DIY Injector cleaning on my 2004.5 duramax and i noticed the return line is just a constant flow! However i have no power issues.. I have no DTC's and no Check Engine light. Also my FPRV is shimmed! What could be happening?
Doing the DIY Injector cleaning on my 2004.5 duramax and i noticed the return line is just a constant flow! However i have no power issues.. I have no DTC's and no Check Engine light. Also my FPRV is shimmed! What could be happening?