Fuel leaking from AFPR port
09-28-2015, 11:14 PM
#1
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Car: 1989 GTA
Engine: SuperRam 350
Transmission: Pro Built S/S TH700R4
Axle/Gears: 3.27
Fuel leaking from AFPR port
In the quest to fix an intermittent hard starting problem as well as rough idle, I discovered that fuel was leaking from the AFPR when I took the vac line off the port. Seems as though this is a broken diaphragm in there.
My question is do I simply buy a replacement AFPR? Or do I need to buy a new diaphragm for underneath the AFPR? I'm not sure if AFPR comes with everything I need. Or if they're simply an adjustment tool for the factory diaphragm.
I see AC Delco has a # 2142156 that is listed as a replacement for my car. But it's just a spring and diaphragm.
My question is do I simply buy a replacement AFPR? Or do I need to buy a new diaphragm for underneath the AFPR? I'm not sure if AFPR comes with everything I need. Or if they're simply an adjustment tool for the factory diaphragm.
I see AC Delco has a # 2142156 that is listed as a replacement for my car. But it's just a spring and diaphragm.
09-29-2015, 07:07 AM
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Car: 87 IROC
Engine: L31 350
Transmission: T56
Axle/Gears: 4.10 D44
Re: Fuel leaking from AFPR port
Yup, that is the tell-tale sign of a perforated/ripper diaphragm. You just need the diaphragm vs new AFPR.
I don't know if any/all/none AFPRs come with a replacement diaphragm either.
I don't know if any/all/none AFPRs come with a replacement diaphragm either.
10-10-2015, 09:56 PM
#3
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Car: 1989 GTA
Engine: SuperRam 350
Transmission: Pro Built S/S TH700R4
Axle/Gears: 3.27
Re: Fuel leaking from AFPR port
All is well again. The adjustable fuel pressure regulator is really just a cover for the spring and diaphragm. The AC Delco part above solved the problem.
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