1982 GS750e random revving? Help!!

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  • NATEO
    #1

    1982 GS750e random revving? Help!!

    ok, so I got my bike back together, but not without some difficulty. first, the #2 and #3 exhaust bolts stripped when I removed them, and they didnt go back in right. so I think there is an exhaust leak. . I will be helicoil-ing it soon.

    my issue is that, while it runs, and it runs stong, it will occasionally rev up, until I hit the kill switch.

    the other thing that I should mention is that when I first got the bike going, it was only running on #2 and #3 cylinders... It is now running on all 4.

    I have spark and compression on all cylinders.

    its a 1982 Suzuki GS750E. anything else you need to know to help me figure this out? the carbs ran fine last year, but I forgot to drain them when I tore the bike apart.

    so far, it has not spiked when I was riding, just when it is sitting still...

    any ideas what it could be?

    thanks...

    Nate
    Tags: None
    • robertbarr
      Forum Sage
      Past Bard Award Winner
      GSResource Superstar
      • Sep 2005
      • 2721
      • Joliet, Illinois
      #2
      Two things come to mind:

      First, watch the carb linkage and turn the bars lock to lock. See if that makes the linkage move. If so, you have the cable too tight and/or you have misrouted the throttle cable.

      Second, this isn't unusual behavior if your carbs are out of sync.
      and God said, "Let there be air compressors!"
      __________________________________________________ ______________________
      2009 Suzuki DL650 V-Strom, 2004 HondaPotamus sigpic Git'cha O-ring Kits Here!

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        • bikechump
          #3
          fluctuating revs sounds like an air leak. check by spraying wd-40/contact cleaner ext. on all seals (boots, shaft that actuates butterflies, o ring behind boots on intake.) No point in synchronizing them if you've got leaks.

            Comment

            • NATEO
              #4
              Thanks for the responses, guys.

              I figured out that the "random" revving wasnt so random.

              turns out it only happened when I turned the bars full lock left... I noticed the pattern today. when i hooked the carbs back up, I routed the throttle cable wrong, and it was actually pulling on the carbs, causing it to jump in RPMs...

              problem solved! I had drag bars coming, and they came today, so I put them on, giving me plenty of slack in the throttle cable.

              Thanks again!

              Nate

                Comment

                • robertbarr
                  Forum Sage
                  Past Bard Award Winner
                  GSResource Superstar
                  • Sep 2005
                  • 2721
                  • Joliet, Illinois
                  #5
                  Originally posted by robertbarr
                  First, watch the carb linkage and turn the bars lock to lock.
                  ... I guess my responses are invisible anymore.
                  and God said, "Let there be air compressors!"
                  __________________________________________________ ______________________
                  2009 Suzuki DL650 V-Strom, 2004 HondaPotamus sigpic Git'cha O-ring Kits Here!

                    Comment

                    • bexabarr
                      #6
                      Well Robert, your responses helped me. I was having the same problem when I switched handle bars today. Thanks guys, what a small world.

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