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Thread: fuel pump pressure?????? 91 2.4L whats the stock pressure?????

  1. #1

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    fuel pump pressure?????? 91 2.4L whats the stock pressure?????

    can anyone tell me what the stock pressure should be im switching the tank on my truck and need a in-line pump instead of the chevy in tank i have

  2. #2


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    at idle 38PSI, with the pressure regulator Vacuum hose disconnected, 47-53 PSI

  3. #3



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    Hey Mike is that what the tank pumps put out? Just wondering because that seems like a lot of fuel pressure. My Carter is regulated with a holley at 3-4psi. 2.0L G63B. My mechanical stock pump on the head was right around the same pressure as well.

  4. #4


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    Straight from the Haynes manual.

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    that is right for an efi truck
    Pennyman1
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  6. #6



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    This is EFI not carb, fuel injection uses a lot more fuel pressure. What Mike quoted seems about right, I know my 4g63t stock pump and system is somewhere in the mid 40s
    Josh
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  7. #7

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    Yeah the EFI requires closer to 40 to work. The carb'd engines going close to 10psi can blow out seals and such in the carb.

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