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I have a 15 hp mercury outboard motor that will start only with carb cleaner for about five seconds then shut itself off. I've tried spark plus new fuel and severa other things. Help!

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Make sure there is fuel reaching the carburetor if there is, it sounds like it needs a cleaning most likely a stuck needle and seat, its not the correct fix but tap on the bowl of the carb moderately with a solid object it may free up the stuck needle. if this does, I would still service the carb to prevent an unreliable engine.

Posted on Dec 03, 2016

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Posted on Jan 02, 2017

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