Hanging idle

[Mike]

On initial start up, my bike idles just fine, but once it gets warm, it'd idling at between 3 and 4k. I've sprayed starter fluid around the boots on both side and it doesn't make a difference, so if I've got an air leak, it's a very small one and I've no idea where.

And yes, I've already replaced the intake boot o-rings.

Thoughts?

[tom203]

On initial start up, my bike idles just fine, but once it gets warm, it'd idling at between 3 and 4k. I've sprayed starter fluid around the boots on both side and it doesn't make a difference, so if I've got an air leak, it's a very small one and I've no idea where.

And yes, I've already replaced the intake boot o-rings.

Thoughts?

Was it idling ok (when warm) back last year? If yes, maybe the throttle cable is now sticking. But it does sound like a air leak. Are you sure your boot clamps are tight?

[Mike]

Was it idling ok (when warm) back last year? If yes, maybe the throttle cable is now sticking. But it does sound like a air leak. Are you sure your boot clamps are tight?

Just bought it a month ago. Boot clamps are as tight as they can go.

[Buffalo Bill]

Mine too! What to do?

I got a 550T with hanging idle too, I'm stumped.
Could be air leaking in along the shafts of the butterfly valves.
Could be a pinhole in the carb diaphragm, or around it's edge.
Could be something else, and probably is.
Best 'O luck!

[Nessism]

Hanging idle means lean. Opening the mixture screws up might help.

[Mike]

Hanging idle means lean. Opening the mixture screws up might help.

Will try tonight, thank you sir

[Nessism]

Where are the mixture screws now and do you have the stock airbox and exhaust installed?

[Skateguy50]

Did the bike have old gas in it? First thing to do is lose the old gas if its questionable or if had stabil in it run through that tank as dry as you can and then fill up with fresh gas. I try to not adjust anything till I got the old gas through the system, also great excuse to take a nice 100 mile or so ride.