bad fuel pressure regulator??
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Junior Member
Joined: Aug 2008
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bad fuel pressure regulator??
i just changed intake gaskets on my 89 350 tpi motor... went to start it and the vacume hose coming off the pressure regulator is just peeing gas into the plenum. im guessing the regulators bad but could it be somting else? like cloged injectors or a bad vacume line? thanks for your help!!!
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iTrader: (5)
Joined: Dec 2006
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From: Augusta, Ga
Car: 1987 Trans Am
Engine: 355ci L98 soon to be turbo'd
Transmission: 700R4
Axle/Gears: 2.73 posi
Re: bad fuel pressure regulator??
sounds like a bad diaphragm. The vacuum line never sees gasoline...
Senior Member
iTrader: (1)
Joined: Jan 2007
Posts: 684
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From: Mesa AZ
Car: 87 Firebird, 90 bird coming soon
Engine: 355 Chevy Vortec Heads TPI, LT1 inj
Transmission: 700r4
Axle/Gears: 2.77 posi 9-bolt
Re: bad fuel pressure regulator??
FPR is the only thing going on here. Diaphram ruptured is the only way gas can go through that vacuum line. Change that and you will be fine.
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