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engine missing past half trottle after warm up

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  • engine missing past half trottle after warm up

    My 92 waverunner 650 starts, idles, and runs fine until it starts to heat up then starts missing. I change plugs, cleaned plug wire leads, put in fuel treatment. Any suggestions?

  • #2
    Re: engine missing past half trottle after warm up

    Put in a new fuel filter, and while on a test run I notice that it runs alot better when facing a strong head wind. ??

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    • #3
      Re: engine missing past half trottle after warm up

      Today if I get a chance I'm going to open some things up and see what could be restricting air to the carburater. Trouble shooting is tough for a jet ski rookie.

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      • #4
        Re: engine missing past half trottle after warm up

        The engine maybe getting hot and causing the issue, go through the cooling system and the exhaust water passages.
        SBT Tech Support is here to help with your problems.
        We try to answer each question quickly and accurately.
        Please do not use Private Messaging for Tech Support, use the forums.

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        • #5
          Re: engine missing past half trottle after warm up

          my 2001 yamaha 2000 seems t be running out of fuel ? carbs have been rebuilt and still falls flat over 5000 rpm's.........

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          • #6
            Re: engine missing past half trottle after warm up

            Did you replace the fuel filter/
            SBT Tech Support is here to help with your problems.
            We try to answer each question quickly and accurately.
            Please do not use Private Messaging for Tech Support, use the forums.

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            • #7
              Re: engine missing past half trottle after warm up

              I replaced the fuel filter and I'm currently rebuilding the carb. I hope that works.

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              • #8
                Re: engine missing past half trottle after warm up

                I rebuilt the carb and put new ends on the spark plug wires. The carb was really junked up and I think that was the problem. I still don't understand why it ran better into a head wind though.

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