TBI low fuel pressure.
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Joined: Sep 2018
Posts: 170
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From: Miami, FL
Car: 1986 Trans Am
Engine: 5.0 LG4 4BBL
Transmission: T5 5-Speed
Axle/Gears: 3.23
TBI low fuel pressure.
Hey guys. I installed a t fitting on my fuel line today because I've been suspicious of the fuel pressure on my 89 TBI Firebird. I'm getting 7.5 psi at idle. (I replaced the fuel filter btw)
So... does it mean my pump is near the end?
So... does it mean my pump is near the end?
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Joined: Jan 2009
Posts: 2,317
Likes: 116
From: belle fourche,s.d.
Car: '82 z28
Engine: L83 5.7
Transmission: 700r4-1985
Axle/Gears: 3.42 posi
Re: TBI low fuel pressure.
Yep,or the coupler hose inside the tank has gone soft and blown out-either way you need to drop the tank..It is common to install a TPI pump as an upgrade 
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