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Motor looses power under load 1989 90 hp mariner pro series

The motor will perform perfectly for a period of time, then without notice it will bog down and loose power under a load. the motor idels fine and reves fine but again you engage the drive and the motor barley has enough power to pull itself.

have replaced spark plugs, and the motor recently had the carbs cleaned, lower unit serviced, etc. recently

i am thinking it is fuel related, either a fuel filter that needs replaced, a primer bulb that is bad or the gas line connection to the motor is faulty

does nayone have any ideas or suggestions?

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  • thomas foster
    thomas foster May 11, 2010

    have you done a compression test when the motor is hot?

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If coppresion is fine then you have a electrical problem more than likley your power pack cdi is gettin hot and breaking down

Posted on Jun 27, 2009

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