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carb Sputter full throttle between 5500 and 7500 rpm

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    carb Sputter full throttle between 5500 and 7500 rpm

    Hello everyone I have got some great info from all of you in the past,but I can't seem to find my new problem on here. After reading many posts about the cv carb issues I have completely torn down and properly cleaned the carbs and done a valve job.

    My problem is I sputter at full throttle between 5500 rpm and 7500 rpm. Below that full throttle is fine and above that is fine all the way to redline. Also it does it in every gear more noticeable in 3rd 4th and 5th

    the bike is a 1980 gs850g. Uni pods. Mac exhaust 4 to 1 with a Vance and Hines insert modified to fit. Dino jet stage 3 kit with the 150 mains in it. Needle set to fourth down from top. Air screws are at 3 turns out.

    Let it me know of any suggestions or any other info you need

    thanks so much

    #2
    Look at the top of this section and read the STICKYs.
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

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      #3
      Did it behave like this before you cleaned carbs? Have you been using this dynojet setup for a while? Tried moving the needle?
      1981 gs650L

      "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

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