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I have a 350 mpi mercruiser that wont start after it has been stopped after a run for about half an hour. the engine splutters and seems to be starving for fuel. only happens stopped and left for half an hour.after engine is cold starts and rune fine. no problems in running and fuel pressure is spec at 43psi. all running temps and gauges are at spec. the problem "developed" intermittantly but now it breaks down regularly. i have checked iac valve and non return valve from fuel tank, all ok.

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Agree above, check plugs see if the are wet, could actually be flooded condition due to bad injectors

Posted on May 27, 2017

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Have you checked the spark plugs ? and its leads, the spark plug can tell you a lot about how the engine is running.

Posted on May 27, 2017

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