hi everyone, new to gstwins, not new to motorcycles or motor work. I do have a lot of experience in atv (2 stroke) motors. I also owned a 600 Ninja for a few years but it was pretty trouble free so I never had to work on it much.
My current project is a 92 GS500, slightly neglected. I just picked it up Monday, it would fire up but not idle. the first time I fired it up, it dumped gas out of the exhaust. I promptly shut it down, drained oil (5+ qts of super thin gas and oil come out) cleaned the carbs set floats best I could, and put it back together. it would then start up with a bad looping idle couldn't rev it at all though. read on here and pulled carbs back apart and found out it was missing the orings under the diaphram caps, replaced them, put back together. now it will start and idle but sometimes it will shoot the idle up real high and hang there, and if I rev it, it hangs there too. I try to put it in gear and take off and it just bogs and dies. I can't do the clear hose trick to set the floats because someone thought it was a good idea to JB Weld the drains on the bottom of one of the carbs. this thing was pretty well tore apart when I got it and I might be missing a hose or something. I think it is a vaccum thing, but don't know where to start. there is a vaccum line going from the petcock to the T between the carbs, and I think that is all that is there. am I missing something easy here? the idle is so loopy now that I can't try the WD-40 trick to check for intake leak cause it revs on its own. sorry for the long winded post but wanted to make sure I covered everything. pictures would be really helpful for any suggestions on what to look for or check!
WD40 will, if sucked in produce smoke out the exhaust.
Yea clean, set floats the normal method and check all O rings.
The hanging idle is lean, I would rejet it with 40 pilots and 125 mains, 1 washer and 3 turns on mix screw.
I think it just needs cleaning and re O ringing.
Cool.
Buddha.
mix screw is the one covered with the cap that needs drilled out? what's the little flathead screws on the bottom side of the carbs? those were set out 1 turn and I left them there.