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Engine starts but misfires?

2003 Yamaha 135 HP waverunner engine misfires. Start Ok. Replaced spark plugs and fuel filter. Some improvement but still misfiring

Tom
April 2007

Yamaha Boats, Powerboats Engine Starts Start

take the fly wheel off and give the CDI units a bl**dy good clean with sand paper and clean the pick ups on the CDI units clean the inside of the fly wheel too and WD40 everything so its water tight

graemedixon34@msn.com
April 2007

hey i have the same problem waht to do?!

kasper
April 2007

Ignition lead/s ?

no-one
April 2007

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Engine starts but misfires?

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