Yamaha snowmobile idle


Old 12-17-04, 09:33 PM
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Yamaha snowmobile idle

I have a 1998 yamaha venture 600cc,2 cylinder,2 stroke.Compression is 100 psi for each cylinder.It start fine when cold and idle is ok.When the motor is warm it will stop on me and it is very hard to restart.I tried to restart it with or without choke and my spark plug are not flooded and it will backfire sometimes.I suspect vaccum hose going to fuel pump or not enough vaccum created in base motor to have fuel pump work correctly.If it is the problem or not could you show me the procedure to trouble shoot.
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Old 02-21-05, 07:26 PM
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sounds like you need to rering you should have higher comperssion

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