Last fall when I put the bike in storage it was acting as if it had a vacuum leak. Once warmed up, it idles around 3000 rpm, unless as I'm slowing I let the clutch out and pull the engine speed down. Once I get it close to normal idle it will stay there. The idle isn't exactly rough, but it isn't exactly smooth either.
Pulled them apart over the winter, cleaned them up, did a bench sync, and replaced the rubber boots to the intakes. Still have the same problem. I read somewhere on the interwebs that the top caps and vacuum slides can get out of round and stick creating a symptoms similar to what I'm experiencing. I pulled the caps and slides and they seem to be able to move freely and don't stick at all.
I also pulled the plugs and I'm lean. To me this seems like a vacuum leak still, but I don't know where one would be coming from on such a simple engine (as I mentioned, I replaced the boots).
I think I still have some work to do with the air Idle mixture screws to do, and I haven't yet done a sync... but I also don't think my hanging idle issue is related to those settings (just an only slightly informed hunch). Correct me if I'm wrong, but doesn't the idle air mixture screw only have to do with 25% throttle or less?
I do have good compression (170 +/-5 on all cylinders) and she really does run like a champ while cruising. Also, the bike is completely original (including the air box). I am hoping to work on this in the coming weekend, and I'm trying to build a game plan for what to do. I'm hoping there's some people out there that have more experience with these cv carbs than me that might be able to point me in the right difection.
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Pulled them apart over the winter, cleaned them up, did a bench sync, and replaced the rubber boots to the intakes. Still have the same problem. I read somewhere on the interwebs that the top caps and vacuum slides can get out of round and stick creating a symptoms similar to what I'm experiencing. I pulled the caps and slides and they seem to be able to move freely and don't stick at all.
I also pulled the plugs and I'm lean. To me this seems like a vacuum leak still, but I don't know where one would be coming from on such a simple engine (as I mentioned, I replaced the boots).
I think I still have some work to do with the air Idle mixture screws to do, and I haven't yet done a sync... but I also don't think my hanging idle issue is related to those settings (just an only slightly informed hunch). Correct me if I'm wrong, but doesn't the idle air mixture screw only have to do with 25% throttle or less?
I do have good compression (170 +/-5 on all cylinders) and she really does run like a champ while cruising. Also, the bike is completely original (including the air box). I am hoping to work on this in the coming weekend, and I'm trying to build a game plan for what to do. I'm hoping there's some people out there that have more experience with these cv carbs than me that might be able to point me in the right difection.
Sent from my SM-T520 using Tapatalk