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My 84 merc 40h will not pull up any speed when you put the throttle down. Its on a 84 bass tracker 16 foot flat bottom boat. It has fuel delivery problems but i am putting a fuel pump kit in today. Do you think that has anything to do with it or do you think it is electric problem?

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  • Dean
    Dean May 11, 2010

    Yes most likely fuel delivery, or carburettor related. Put in new fuel pump, then test... If still no go, time to strip the carburettor and give it a good cleanout, including the high speed jet needles.

  • Frank
    Frank May 11, 2010

    if the motor run without any problem beside lack of power, the fuel delivery correction should be just that.


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Change the plugs first if not or u have already then its probally your power pack

Posted on Jun 27, 2009

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