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Thread: Replaced Fuel Pump- Do I need a New Filter?

  1. #1
    Join Date
    May 2019
    United States
    My Cars

    Replaced Fuel Pump- Do I need a New Filter?

    So I recently picked up an 04 325i and while driving at a steady speed the car bogs down and died. I had to get the car towed and apparently the fuel pump just died on me while driving. I ordered a new pump and replaced it and the car is now running again. Does the pump usually go because of increasing back pressure from the filter or does it kind of die after a certain amount of time regardless of the condition of the filter?

    Last edited by LeonJames; 06-03-2019 at 11:12 AM.

  2. #2
    Join Date
    Jan 2007
    Atlanta, GA
    My Cars
    2019 Chevy Silverado
    From my experience, they just die with age. However, the fuel filter should be replaced as part of routine maintenance. If it's never been replaced before, then I would highly recommend doing it. Just don't mix up the lines. There's two on the back of the filter.
    BMW Level 1 Master Technician

  3. #3
    MauiM3Mania's Avatar
    MauiM3Mania is offline Observer/Master Skeptic Moderator
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    Central Pacific
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  4. #4
    Join Date
    Apr 2013
    Mill Valley, CA
    My Cars
    2003 330cic
    If the filter is over 60k miles old replace it. You can diagnose, but it is a good maintenance item.

  5. #5
    Join Date
    Jul 2011
    Arlington, VA
    My Cars
    2018 BMW M240i
    Make sure you buy a fuel filter made by either Mahle or Keyser. Both supply filters to BMW. Do not buy a cheap aftermarket fuel filter as the fuel filter gas the fuel pressure regulator.

  6. #6
    Join Date
    Jan 2017
    My Cars
    E21, E46
    Definitely replace the filter.

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