replacing a c-4 fuel pump



Re: replacing a c-4 fuel pump

Postby bytor » August 7th, 2014, 12:58 pm

87vette81big wrote:There is a Return fuel line fuel filter installed on just 1987 Corvettes Bytor.
Mounted direct above primary feed line fuel filter.
Return line filter is plugged up Bytor.



I wondered what that was. I did't see it described in the service manual. I'll do a quick test this weekend and bypass it to see if that changes things.. Thanks for the tip!

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Re: replacing a c-4 fuel pump

Postby 87vette81big » August 7th, 2014, 1:22 pm

The return line filter is meant to Dampen Silent the Fuel pressure regulator in operation.
The 1985-86 C4 had complaints of return line drumming & banging noises.
It was an Old TSB.
1988-96 Did without it.
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Re: replacing a c-4 fuel pump

Postby bytor » August 7th, 2014, 1:29 pm

Yep, I think I remember reading about that somewhere. I don't remember it looking like the one pictured above. The last time I was under the car replacing the primary fuel filter, I thought I remember seeing it but it was axial, not like the one in the pic above. I will check it out regardless.

The replacement filter is an expensive sucker.
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Re: replacing a c-4 fuel pumpIts

Postby 87vette81big » August 7th, 2014, 4:02 pm

It is a Farm Grain Truck Fuel filter actually Bytor.
Nothing exotic.
I have a spare AC Delco filter element put away.
Bottom spins off. Disposable filter inside.
Should be able to cross over to a WIX #.
Find it for you tonight & post my spare filter element.
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Re: replacing a c-4 fuel pumpIts

Postby bytor » August 7th, 2014, 5:05 pm

87vette81big wrote:It is a Farm Grain Truck Fuel filter actually Bytor.
Nothing exotic.
I have a spare AC Delco filter element put away.
Bottom spins off. Disposable filter inside.
Should be able to cross over to a WIX #.
.



Oh I see now. Here's the GM replacement element.
http://www.amazon.com/ACDelco-GF157-Fuel-Filter/dp/B000C9QCKG/ref=sr_1_1?ie=UTF8&qid=1407449007&sr=8-1&keywords=Gf157
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