possible fuel pump going bad?
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From: chicago
Car: 87 GTA
Engine: 385 sbc
Transmission: 700r4
Axle/Gears: 2.73 posi
possible fuel pump going bad?
My new 385 has been surging at idle lately, I checked the fuel psi with a gauge(not running, I have a header off right now) and its jumping erratically 2-3 psi it also drops pressure almost immediately to 0. Does this sound like a fuel pump or a bad pressure regulator. I am currently running an inline booster pump and I do have an adjustable pressure regulator.
Thread Starter
Supreme Member
iTrader: (20)
Joined: Aug 2007
Posts: 1,111
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From: chicago
Car: 87 GTA
Engine: 385 sbc
Transmission: 700r4
Axle/Gears: 2.73 posi
Re: possible fuel pump going bad?
On another note I pulled 30in of vacuum on my afpr and it held at 30 with no drop
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From: Windsor , Ontario
Car: 1995 Chevy 4x4
Engine: 355 cu. in. Vortec / TPI / MAF
Transmission: 4L60E
Axle/Gears: 3.73 Limited Slip
Re: possible fuel pump going bad?
What about the fuel filter it will also cause surging if it has not been replaced in awhile an could possiblely burn out your pump eventually
Thread Starter
Supreme Member
iTrader: (20)
Joined: Aug 2007
Posts: 1,111
Likes: 1
From: chicago
Car: 87 GTA
Engine: 385 sbc
Transmission: 700r4
Axle/Gears: 2.73 posi
Re: possible fuel pump going bad?
fuel filter has @ 200 miles and less than 3months on it. Just checked the vacuum line to the afpr and it does smell like gas. Even though it holds vacuum and does adjust the fuel pressure properly this means its definetly bad..right?
Last edited by wanab03ss; Jun 5, 2010 at 11:21 PM.
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