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Old 07-31-2011, 11:27 AM   #2
DOOmsman
Gone Wild
 
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Yamaha
 
Join Date: Jul 2008
Location: Reddick IL
Posts: 10,985
Default Re: White smoke and gas in the crank case

The pulse line goes from the crank case to the fuel pump, you are checking it to see if
it is full of fuel. If so the diaphragm has ruptured.
The float may be gas soaked or there may be a piece of junk, crud in he needle seat.
Your having to choke makes me think it is the fuel pump.
See a stickie in the Yamaha section fuel pump.
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