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Discussion Starter · #1 ·
I have a 97 Yamaha virago 750. I have run into a situation my bike I can start in prime move it to run and will run fine . Cant start it in run position every time I have to start it in prime no matter how long it sat not sure why any ideas ? I'm thinking maby a vacuume leake but not sure any and all ideas would be great thanks
 

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It seems to be working as intended. The prime position allows fuel to freely flow from the carb without vacuum in order to have enough fuel to start the motorcycle before it is running. Vacuum is generated on the intake stroke once the engine is running. Once started, switch it to run and enjoy the ride.
 
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