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  1. #1
    Seaman Apprentice
    Join Date
    May 2004
    Location
    New York
    Posts
    46

    Default 1974 Mercury 500 ?

    My motor accelerates fine when I take off ,when the motor is ran for a while and warms up my acceleration sputters What can cause this lack of accelration ?

  2. #2
    Lieutenant Commander
    Join Date
    Mar 2003
    Location
    Qld Australia
    Posts
    1,668

    Default Re: 1974 Mercury 500 ?

    How is the temperature? When was the impeller last changed ? They tend to run poorly when overheated. Do you have a water pressure gauge or can you feel the pee'er temperature at high speed by hand ?

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