Question about Mercury Marine Mercruiser Gen Ii Alpha I V6 4.3 Outdrive

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Why does my mercruiser 4.3 sputter and backfire after hot

After the engine has been running and it is hot, if I slow down and then give it gas again, the engine sputters and backfires. it does not quit. but I have to speed up slowly through the sputtering to get up to cruising speed.

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It sounds like a fuel vapor lock, check that the fuel line to the carb is not coming contact with any metal surfaces of the engine for this will boil the fuel in the line before it enters the carb. If this is the case, just stand the fuel line off from where it is touching. I hope this helps....GOD BLESS....Randy...

Posted on Nov 07, 2017

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Posted on Jan 02, 2017

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Is the running fast question answered? Give me more information on the problem if it isn't.

Please rate this answer. Thanks njv6!

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