So i am having some issues with my 2003 mach 1, procharged with gt40 fuel pump, 20amp bap, and 60lb injectors. Car got tuned and since then the fuel pressure gauge reads 0 during prime and would jump up after start up. Didnt think much of it and seemed to run fine for about a month , but now the car wont start at all. Can the tune affect the prime fuel pressure? I took the shrader valve off and turned the key to on and no fuel is coming out. Sounds like its the pump? I replaced the FRPS today and still nothing.
Fuel Pressure during Prime
- Thread starter blk03shkr
- Start date
Do you hear the pump turning on? Is your FP gauge electric?
I can hear it faintly, not as loud as I think it should be, I'll get some one to prime it while I stick my head in the back. The fp gauge is electric w/ it's own sending unit mounted to the hole where the shader valve used to be.
Pump is definitely getting power, had someone turn the key while I listened.... Maybe a hose came loose
Well pprv delete hose came loose from the pump.....doubled up on the hose clamps this time.
Yup, I've had that happen before 
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