how do i check fuel tank vent

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how do i check to see if my fuel tank is correctly vented,, i am having problems at full throttle and the rpms drop and the boat slows down after about 5 or so minutes,, 140 i/o mercruiser 3.0
 

Boatin Bob

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Sep 24, 2001
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Re: how do i check fuel tank vent

Jeff....one method you could try is the next time you are having the problem open up your fill cap and see if it picks up right away, if it does then most likely your vent/line is clogged. If it's clogged then you try to blow air through it or see if it's become kinked.
 
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