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Old 12-25-2018, 09:19 AM   #1
solidaxel
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Fuel Pressure Check Valve

I have a Corvette fuel filter and an in tank pump
Key on I have good pressure 58# as soon as I turn the key off it will bleed down to zero and not hold pressure
I would think it should hold pressure for a few minutes.....correct?
Is the check valve in the fuel pump or the Wix regulator?
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Old 12-25-2018, 09:43 AM   #2
mongocanfly
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Re: Fuel Pressure Check Valve

mine holds pressure after turning off key...may be check is in the wix reg and the pump..you may want to change it
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Last edited by mongocanfly; 12-25-2018 at 09:55 AM.
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Old 12-25-2018, 09:56 AM   #3
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Re: Fuel Pressure Check Valve

Here's a older thread on them....http://67-72chevytrucks.com/vboard/s...d.php?t=699891
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Old 12-26-2018, 09:44 AM   #4
solidaxel
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Re: Fuel Pressure Check Valve

From what I read there is a check/v in the filter so I will replace that and see what happens.
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Old 12-27-2018, 09:15 AM   #5
homemade87
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Re: Fuel Pressure Check Valve

why are you looking at fuel pressure . Are you having problems . A leaky fuel injector can do the same thing and bleed off pressure as well and cause some problems .

Most all I have seen will bleed off pressure . If it drops to zero in 5 seconds I would look into it . But if bleeds off down to 10 to 15 lbs after a short time after shut down I would not concern myself . The fuel system will still do its job and most likely you will not see any ill affects unless there is a problem .
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