Quote:
Originally Posted by miverson332
I put in the new fpr and the original problem still exists. If it is the fuel pressure that is causing the engine to fail, then I am not sure where to go from here? I can check fuel pressure before the filter, check the wiring harness, but it sounds like I may need to take it to a local shop. I did most of the diagnosing myself, so that should save some money and time.
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when you started this you had fuel pressure jumping 40-47 psi engine running. then the fuel pump replaced and the pressure increased and was steady around 45 psi.
with the fpr replaced what is the pressure ?
I mentioned before at the fuel rail area squeeze the return line with the engine running and the pressure Gage connected see if it surges up to 80 psi area.
or connect to the fuel pump filter the pressure gage and ignition on engine off see how high it goes and if it holds pressure. should go high .75-90psi.