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Thread: Fuel Pump Problems

  1. #1
    Join Date
    Mar 2014
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    MN
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    53

    Fuel Pump Problems

    So about 3 months ago i did an eaton swap on my 04 MM. For the past about 3 weeks i have gradual seen a power loss get worse. I hooked a fuel presure gauge to my fuel rail and keyed the car, it jumped up to 15 psi, i keyed the car a few more times and the psi stopped at 25psi.

    When i did the Build i installed an Aeromotive 340 fuel pump. i did replace all the fuel lines in the tank.
    What could this be??? Fuel pump bad already or FPDM??

  2. #2
    Join Date
    Nov 2002
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    St. John, IN
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    14,251
    Bad pump or a split in one of the lines.

    Some will say fuel filter, but highly doubtful.

  3. #3
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    Get a reading when the car is running.

  4. #4
    Join Date
    Jan 2004
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    Somewhere in the N.C. Triangle
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    Quote Originally Posted by Zack View Post
    Bad pump or a split in one of the lines.

    Some will say fuel filter, but highly doubtful.
    If you don't know when the filter was replaced I'd do it. Cheapest & easiest possible fix.

    Quote Originally Posted by Zack View Post
    Get a reading when the car is running.
    +1 on a reading when running.
    “When you can’t make them see the light, make them feel the heat.”
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    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

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    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
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  5. #5
    Join Date
    Mar 2014
    Location
    MN
    Posts
    53
    I will have to get back to you on the fuel pressure when car is running.
    the car will start run and drive fine. I will only notice problems if 1/3 throttle or more.

  6. #6
    Join Date
    Mar 2014
    Location
    MN
    Posts
    53
    i already replaced the fuel filter not the problem

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