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Thread: Fuel pressure drop when accelerating

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    Basic Member Bkight14's Avatar

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    Fuel pressure drop when accelerating

    I have an AirDog 165 and my aftermarket fuel pressure gage idles around 24-26 psi. When i get on the throttle the pressure will slowly drop to 19 psi and thats the lowest itll go. Driving normal it doesn't fluctuate but maybe 1 or 2 psi. My fuel and fuel water seperators have been changed since ive noticed this. There isnt any change in performance wise and i haven't had any other issues. If anyone has any insight about this, id appreciate it.


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    Old & Grumpy! Polaraco's Avatar

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    Quote Originally Posted by Bkight14 View Post
    I have an AirDog 165 and my aftermarket fuel pressure gage idles around 24-26 psi. When i get on the throttle the pressure will slowly drop to 19 psi and thats the lowest itll go. Driving normal it doesn't fluctuate but maybe 1 or 2 psi. My fuel and fuel water seperators have been changed since ive noticed this. There isnt any change in performance wise and i haven't had any other issues. If anyone has any insight about this, id appreciate it.
    I know why. They are only capable of maintaining 20 PSI. When you are accelerating, you're using more fuel. 26 PSI is too high anyway. You're not supposed to be over 19


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    Basic Member Bkight14's Avatar

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    So 20 psi would be better to run it at?


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