I picked up my truck today, 2001 2500 TD 24 valve after having EGT and
fuel pressure gauges installed. At idle, fuel pressure is like 5-7 psi,
it "hunts". While driving it is around 3 max, going up a hill (truck is
not really trying) it can drop to 1 or 2 psi.
What should the pressure be at idle, when driving, when working hard?
Does this mean I need to replace the lift pump before it takes out the
main fuel pump?
My friends say CarQuest sells the same pump as you get from Cummins for
a lot less. Around $100, I think. Main pump they say is a $2,000 job.
Is it hard to do or get at? If so, I have a mechanic that can do it.