Engine/Transmission (1998.5 - 2002) FP and VP questions.

[dshawhan]

1. What is too much fuel pressure at the injection pump? With my Carter P4600HP pusher and a new stock lift pump and a new filter I have 33psi post filter at idle I can bring it down to @20psi

with load and wot. With PM3 on kill I can get it down to 18psi

2. When testing the Vp-44 before disconnecting the FPCM should the battery cables be unhooked? I didn't and it finished off my VP for good. (now have new one)

Thanks in advance for any help Dan.

 

[Mad Bomber]

fuel pressure

33 PSI at idle. I do belive that's too high. Have you ever put a 2nd gauge on to see if the 1st gauge is right?Eric