3.4 dohc fuel pressure regulator interchangeability

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XzotikGT
Posts: 94
Joined: Fri May 06, 2005 11:23 pm
Location: Kent, WA

3.4 dohc fuel pressure regulator interchangeability

Post by XzotikGT »

I was told that the base fuel pressure for the 3.4 dohc is supposed to be around 40 psi. My base is right at 50 psi at idle. With the turbo running at 10 psi I have 60 psi fuel pressure. If I am correct this is enough fuel for 10 more psi of boost.

With that in mind I am leaning towards my fuel pressure regulator being bad. I have a spare regulator on the fuel rail of a 2001 Grand Prix SC2, that I nabbed the 36lb injectors off of. Does anybody know if they are interchangeable? Also what is the base pressure for the sc2 unit?
XzotikGT
1987 GT+1996 3.4 dohc+To4b+water injection
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