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15hp mariner only firing on one cylinder - Light Outboard Motor Boat Bass Fishing Saltwater Base

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Check the ignition wires or spark plugs.

Check compression on each cylinder.

Posted on Nov 13, 2013



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SOURCE: 91 mariner 15hp. Runs but the cooling water

First easy check is to get some line trimmer cord(about 6 inches long) and with the motor running push it in and out of the water telltail hole.Sometimes this will unclog some debris.Hope this helps

Posted on Jul 10, 2010

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If you require more assistance don't hesitate to send a comment.


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