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About mil81

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  1. mil81

    426 Won't Open Up

    Hmmm, so when I disconnect the sky blue wire from the grey 6 wire connector to the cdi the bike won't run at all? I am positive it wasn't grounding out. It just plain won't run without the wire. Any suggestions?
  2. mil81

    426 Won't Open Up

    Beauty. That wire is still plugged into the cdi, so I will pull in out of the plug tomorrow and see if the problem goes away
  3. mil81

    426 Won't Open Up

    I believe the neutral has been eliminated. Which wire is it out of the cdi?
  4. mil81

    426 Won't Open Up

    Awesome. Thanks for the advice. The plate on the slide is oriented correctly, and everything else appears ok. I will check the electrical soon and report back
  5. I am working on my Uncle's Yamaha 426 and am running into a brick wall. Bike is an '01 426 with an adjustable cam and FMF exhaust The bike starts like a dream, idles great, runs quite well until about 1/4 throttle. That is where is stops opening up. 1/4 throttle to full throttle there is no change in rpm. It actually "bounces" there like a tuner car hitting a rev limiter. When I pull the air cleaner off it stops "bouncing" but will still only run 1/4 throttle (Maybe 3000-4000 rpm). The plug is a dual electrode which I am not accustomed to reading, but from a short plug shop at full throttle the center electrode is a little bit white. Could a lean issue be causing this? I can verify jetting next time I have the carb apart. The valve timing has been verified by two professional shops. Leak down test came back at 98%. Has new spark plug. Carbs have been cleaned many times over... Any ideas? Thanks a lot for your help