Fuel filter check valve
Thread Starter
Joined: Dec 2000
Posts: 2,341
Likes: 151
From: Cincinnati,Ohio
Car: 1991 BandittII Firebird
Engine: 5.7 HSR
Transmission: 700R4
Axle/Gears: 3.27 9 bolt
Fuel filter check valve
Does a stock type fuel injection fuel filter have a internal check valve to maintain fuel pressure at the fuel rails?
Thread Starter
Joined: Dec 2000
Posts: 2,341
Likes: 151
From: Cincinnati,Ohio
Car: 1991 BandittII Firebird
Engine: 5.7 HSR
Transmission: 700R4
Axle/Gears: 3.27 9 bolt
Re: Fuel filter check valve
According to K&N tech support their PF-1000 direct replacement fuel filter does not have a one way check valve, it's safe to assume that a AC Delco or other direct replacement filters also do not have a check valve.
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Joined: May 2015
Posts: 1,154
Likes: 89
From: Temecula, CA
Car: 1989 Pontiac Formula 350
Engine: L98
Transmission: 700R4
Axle/Gears: BorgWarner 3.27 Posi
Re: Fuel filter check valve
No.
It was the pumps that had them, not the filter.
Most pumps don't even have them now. You can buy an in-line high flow check valve if it's something you really need, but modern pumps pressurize so fast it isn't needed.
It was the pumps that had them, not the filter.
Most pumps don't even have them now. You can buy an in-line high flow check valve if it's something you really need, but modern pumps pressurize so fast it isn't needed.
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