1988 tpi fuel pressure specs
Thread Starter
Junior Member
Joined: Sep 2010
Posts: 9
Likes: 1
From: north carolina
Car: 1988 iroc-z
Engine: 5.7 tpi
Transmission: 700 r4
Axle/Gears: 3.27
1988 tpi fuel pressure specs
what is the fuel pressure spec for a 1988 5.7 tpi engine.my is 43 psi with ignition on and when cranked it idles at 35 psi.
Joined: Nov 2008
Posts: 2,106
Likes: 181
From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: 1988 tpi fuel pressure specs
Thats the way it should be. You're in spec.
Member
Joined: Mar 2004
Posts: 110
Likes: 0
From: Fremont, Ca
Car: 1988 IROC-Z Convertable
Engine: 350 Cam, Heads, Heders...etc.
Transmission: 700-r4 "Raptor"
Re: 1988 tpi fuel pressure specs
You didn't mention how you measured it so to be sure, you need to disconnect the vacuum line to the fuel pressure regulator when measuring it; 43.5 is what it should be at idle.
Member
Joined: Jun 2011
Posts: 155
Likes: 0
From: semo
Car: 89 iroc z
Engine: 353tpi
Transmission: 700 r4
Axle/Gears: 342
Re: 1988 tpi fuel pressure specs
It should idle at 43 and your is at 35 idle I'd get another pressure gauge and if it stills. Shows 35 check your fuel filter
Supreme Member
iTrader: (2)
Joined: May 2009
Posts: 3,371
Likes: 2
From: Delaware
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: 1988 tpi fuel pressure specs
vacuum line disconnected and plugged, and the other side of the vacuum line at the plenum should be capped off too. Car idling in park and the pressure should measure 43.5 psi (stock).
Thread
Thread Starter
Forum
Replies
Last Post
R3500
Engine/Drivetrain/Suspension Wanted
1
Aug 17, 2015 12:16 PM
92camaroJoe
Tech / General Engine
6
Aug 13, 2015 06:07 AM
