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  1. #1

    Default Marcruiser 5.0 MPI acts like starving for fuel

    Hello,
    My boat just started acting like it is starving for fuel. I runs great for 3 to 5 minutes then starts acting like it can't get fuel. The engine doesn't die but the RPMs go up and down. I pull the engine back to idle at about 750 to 1000RPM and it idles fine. I wait 3 to 5 minutes run it up 3000RPM then the engine runs great for 3 to 5 minutes then repeats. I changed the $60 fuel filter in the fuel module and that didn't help. I have fresh fuel in the boat. What are your thoughts?

  2. #2
    Join Date
    Sep 2003
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    New Tripoli, PA, USA!
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    Default Re: Marcruiser 5.0 MPI acts like starving for fuel

    Clogged anti-syphon valve at the tank?

    Jeff

  3. #3

    Default Re: Marcruiser 5.0 MPI acts like starving for fuel

    Quote Originally Posted by fastjeff View Post
    Clogged anti-syphon valve at the tank?

    Jeff
    Thank you Jeff I will check that out. I'm really not sure.

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