hey guys got a quick question, my cousin has an 03 cummins and thinks his lift pump could be goin out. would he have hard starts if it was on its way out? and also would he have the same lp setup as my 06? TIA!
For once I agree with Mr. BBSpam, also it could be injectors as they don't have to put fuel into the oil but can just bypass it back into the return line, would need to do a leakback/flow test. Couple other things could be rail fuel pressure sending unit, or the rail pressure pop valve.IIRC, I believe there is a wire behind the A/C Compressor that should be check for damage. Edit, Sorry, that's for a rough idle.
The FCA can also be an issue.
On mine the RP sending unit was going and it took forever to get it started, got lucky and had another truck to pull one out of to try......immediate difference.rp sending unit or the pop valve would make it start hard?
well the truck can be warm and still not wanna start. we had it out last sat. was driving for prob. 45 min so the truck was plenty warm shut it off and it didnt want to start back up, it just cranks and cranks and then it finally catches and fires up.what other symptoms is he having, like stated, a fried fca, bad lift pump, is it harder to start warm or cold? rail pressure sensor, relief valve, or even bad injector/s....
no its doesnt turn over sluggish like its the batteries. it spins over just fine, it just doesnt want to fire.Does the thing have a hard time turning over? Does he have OEM batteries, I just had to replace both of mine last month because they were both past the point of no return.