fuel pressure
fuel pressure Iīm measuring my FP and its 37 at idle like it should be but when i remove the vacum itīs raises to 38-39 and the needle spikes/shakes,i would beleve the FP should be 41-47Psi with no vacume?Is my FPR bad?
Iīm going take the gauge and tape it to the windsheild and make a wot run,should th FP be at 43 at wot?
Iīm going take the gauge and tape it to the windsheild and make a wot run,should th FP be at 43 at wot?
Took it out for a drive,itīs steady on 37 psi and when i try to make a wot it just drops to 30psi
Is it then the FPR that is the cause?i donīt see anythin else that could caus it to drop?
Is it then the FPR that is the cause?i donīt see anythin else that could caus it to drop?
could be bad FPR.... could be clogged fuel filter or a bad pump..... the injector wouldn't cause the rail pressure to drop so that's not the problem.... i'd say start with the filter since it's the cheapest.... after that replace the FPR..... if that doesn't fix it get ready to cut that access panel to your fuel pump underneath the rear carpet... unless you like dropping the tank......
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TECH Senior Member
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From: Decatur, TN (N-W of Athens)
Originally Posted by OutlawZ
the injector wouldn't cause the rail pressure to drop so that's not the problem....
You've never seen what a leaky injector can do then. Prime the system, and watch the fuel pressure slowly drop to nothing.
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Verdad Gallardo I aggree the injectors couldenīt drop the pressure that fast(like a stone) and the FPR is unlikely so i cut an access panel and saw that the hose from the pump the the lines was not sealing up,bought a new fuel hose and threw the TRE line in the garbage
Now itīs fine,pime it and the pressure shoorts up to 50psi and holds 41psi at idle
Thanks anyway
Now itīs fine,pime it and the pressure shoorts up to 50psi and holds 41psi at idle
Thanks anyway