felix2464

i just cant understand how the truck came back from a 3hr trip and was shut down after idling for 15mins to cool off and will not start. seems pretty finicky to me, this is my first experience with the cummins or frankly any diesel engine and it hasn't been a good one thus far. I am almost to the point of re-licensing my 95 chevy 3500 with a 454 and paying the extra fuel cost just to have peace of mind. That truck has 315k miles on it and has never been apart, i cought it new and the most extensive thing i have done to it has been spark plugs and 2 fuel pumps.

The batteries are both brand new and i found some corroded wires under truck which i repaired when they were probed when the auxillary tank was installed in the bed. Just talked to a cummins mechanic and he is directing me towards a fuel pressure relief valve which is on the top of the fuel rail. He told me that if i loosen the bot and take off the banjo fitting there should be no fuel present, if so the fuel is bypassing and going directly back to the tank. This seems to be the case. He is sending me a replacement which should be here on thursday that is machined to the correct clearances with no internal moving parts to forever solve that problem as he said a stock engine would never generate the pressure needed to trigger the relief valve in the first place. I hope this helps and might save someone else some headaches.... i iwll post my findings when i get the new part installed.

This truck ran perfect yesterday and will not start at all. It cranks fine and I replaced the lift pump and fuel filter. There is no smoke at all and it just acts like it is not getting any fuel. It ran like a dream when it was parked and the next day it wont fire at all. I tightened all grounds and cleaned both sets of battery cable ends. i am at my wits end with this truck, i have owned it for less than a month and am not having a very good first experience with the great cummins engine. it is giving 4 codes.p2509p0462p0463p0516