Mercury 2stroke fuel problem

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clyde1394

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Oct 24, 2010
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I have a 2001 40hp Mercury 2stroke. It has sat for about 6 months and now will only run if being choked. I have replaced the mechanical fuel pump and all of the fuel and injection lines. I have also removed and cleaned the carb. I don't know where to look next?:(
 
bktheking

bktheking

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Re: Mercury 2stroke fuel problem

Carb is still an issue, it's not cleaned enough to run off choke.
 
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clyde1394

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Re: Mercury 2stroke fuel problem

The carb is spotless, as is the needle and seat, which is set and functioning fine static.
 
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clyde1394

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Re: Mercury 2stroke fuel problem

Also the motor only has about 150 hours on it total. If compression was the issue, it wouldn't run with the choke on either.
 
bktheking

bktheking

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Re: Mercury 2stroke fuel problem

The carb is not spotless, go through it again.

Trust me, having to choke the motor is compensation for what the motor isn't getting - fuel, it were working properly you wouldn't have to choke it.
 
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clyde1394

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Re: Mercury 2stroke fuel problem

Thank you BKtheKing for making me rethink my steps. I did clean the carb but missed the jet inside the bowl that is accessable behind the drain plug. It is now unclogged and problem solved! Happy boating!
 
bktheking

bktheking

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Re: Mercury 2stroke fuel problem

That will do it, glad it's working now :D
 
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