1982 GS750E Manic Issues (please help!)

[steve murdoch]

Progress or not, follow-up is good.
As Rich mentioned take some pics. We all like to see members bikes and they may help you when it is time for reassembly.

[luke]

Hello again!

I just completed the full carb rebuild as well as dynojet stage 3 kit install. Just fired the bike up and the intermittent issue is still there. It will idle and run beautifully cold and then all of a sudden the engine speed will spike and sounds horrible, like it’s misfiring. Seems to me that it could be an ignition issue. Any thoughts? When it did idle it sounds beautiful so I don’t suspect a lean condition.

Thanks again! 29EDCD3A-0CAC-47B4-B801-24CF9E5F418E.jpg

[luke]

My plan now is to clean up/test the ignition system, I feel as if I'm getting an inconsistent spark for some reason. Other than that, is there a common issue(s) to look for when doing so? Otherwise I'll just test everything. Here's hoping for one of those "simple" fixes.

[Carter Turk]

I've had a few cracked intake boots over the years, hard to see underneath 2-3 and sometimes they crack underneath the clamp on the intake manifold side.
Might be worth a check as the carbs have no support from the airbox, all the weight is supported by the boots and the rpm increase may indicate a vacuum leak.
A support can be fabricated to hold the carbs up on the inside of 2-3 and attached to 2 6mm threads on the frame where the airbox used to attach. Or just use a beefy ziptie.