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1988 6 HP yamaha won't idle only runs on choke

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  • 1988 6 HP yamaha won't idle only runs on choke

    I ran carb dry of gas and stored over the winter. I took it out in spring and the motor won't run unless on almost full choke. I replaced fuel pump kit hoping for the fix, however my problems persist after multiple cleanings. Any advice on other causes for my issue would be greatly appreciated.

  • #2
    It sounds like a classic example of the choke enrichening the mixture to overcome a lean condition caused by plugged carb jets. Remove and clean carb, then install a fuel/water separater type cartridge filter to help prevent further fuel related issues. Good Luck!

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    • #3
      i have cleaned the entire carb and everything looks good as new. Before the first initial storage I had no prior problems... no problems with fuel to the carb.

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      • #4
        Some carb jets are very small and difficult to clean...ultrasonic bath, wire, soak in carb cleaner overnight?...

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