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  • Carb Puke

    The Carb puke comes from the gas line from the filter to the carb, gas boiling in the line and also from the carb bowl. The gas in the line boils and can't go back due to the fuel pump. So it is forced into the bowl which already has gas in it, therefore causing the float bowl to overflow out of the top left overflow tube on the carb. If you insulate the fuel line it will stop the overflow issue. If you remove the fuel pump it will allow enough air to keep it from carb puke. If you shut the petcock off 30 sec. prior to shutting off the bike it will burn enough fuel from the bowl to allow for the fuel in the line to enter the bowl without overflow puke. Or do like I did and run a line from the overflow down under the bike to the ground and if it overflows it just hit the ground and evaporates.

  • #2
    that is conjecture , i would not recommend turning off gas while riding either. check float level. i aqree with insulation part , yamaha did it for us. it is most definitely a heat and expansion issue, small bowl in between 2 big air cooled jugs, if too lean it'll get hot. or parade riding.

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    • #3
      Here is what I do. Stop the bike normal. If it's real hot out and I go to start (knowing it's going to crank and not fire due to carb puke/heat soak) I just simply twist the throttle wide open at the same time I press the starter....wham it starts with authority every time....no cranking.....no fuss.

      carb puke has never ever been a problem for me when I do this regardless of how hot it is.
      "I'm Ricky Bobby. If you don't chew Big Red.....then Fuck You"

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      • #4
        thats an old motocross trick for a flooded condition.

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        • roadiemort
          roadiemort commented
          Editing a comment
          What are you talking about? Lol, same procedure for any carbed flooded engine for ever, Lmao.

        • brianmac
          brianmac commented
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          yes sir

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