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7.4gi fuel pressure specs….
Posted: Thu Jun 24, 2021 10:23 pm
by Lukeoforcas
Anyone? Anyone?
My low side is less than 10psi cold start. High side is 40ish. Having hard hot restart and running lean for a minute while applying power. Then clears up.
Re: 7.4gi fuel pressure specs….
Posted: Thu Jun 24, 2021 11:05 pm
by bruceb58
Throttle body or MFI?
Re: 7.4gi fuel pressure specs….
Posted: Thu Jun 24, 2021 11:13 pm
by Lukeoforcas
Mfi
Re: 7.4gi fuel pressure specs….
Posted: Fri Jun 25, 2021 4:16 pm
by bruceb58
the spec for low is 8 and high is 50 to 60
Re: 7.4gi fuel pressure specs….
Posted: Fri Jun 25, 2021 10:18 pm
by glenncal1
Check the fuel pressure regulator. Had to do that on a 7.4 merc mpi. In my case the pressure was too high causing other problems. Fairly easy swap out.
Re: 7.4gi fuel pressure specs….
Posted: Sat Jun 26, 2021 12:29 pm
by Lukeoforcas
Seems like I saw somewhere on here that somebody found a Bosch part number for the regulator. So one wouldn’t have to buy that super expensive blue box.