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Old 06-23-2010
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Join Date: Jun 2010
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Default 40hp 2 stroke running problem

I have a 2004 40hp 2 stroke. It is idling fine but when I put it in the water and give it throttle it runs real rough and then falls on its face. I checked the carbs and they look to be clean. Not sure where to start looking next?
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Old 06-23-2010
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Join Date: Dec 1969
Posts: 4,710
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Check compression, spark, timing, and then fuel.
How did you check the carbs. they need to be disassembled completely and cleaned with carb cleaned and compressed air. And then do a link and sync on them once reinstalled
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