1982 GS750e random revving? Help!!

[NATEO]

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

[robertbarr]

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.

[bikechump]

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.

[NATEO]

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

[robertbarr]

First, watch the carb linkage and turn the bars lock to lock.

... I guess my responses are invisible anymore.

[bexabarr]

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