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Please help boat will only run at full throttle

Mossberg771

New member
So i have a 1991 phantom 170 with a 4cylinder cobra omc my issue is it will only start and stay running at full throttle i can only idle back to 3/4 throttle and it dies any further than that? Please help needing to winterize ASAP monday it goes*down to 28 degrees here!
 
Did you find the problem? Have you checked the ignition timing? Can you feed the engine with just a can of carb spray being fed into the engine? That would verify whether or not you're getting fuel into the motor from the carb. Have you done any work just before the problem showed up.
 
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