82 550L with a hanging idle

[stevey9]

My 82 550 has a very annoying and odd hanging idle. I've taken the carbs off and made sure all the passageways were clean, there doesn't seem to be any air leaks at the air filter boots or the intake boots, the thottle cable doesn't seem to be catching and the choke cable has slack.

I'm out of ideas on what could be causing it. The odd part is that sometimes when I engage the clutch to bring the idle down it'll stay down after I release the clutch.

Any ideas would be helpful.

[tom203]

When you took carbs off, did you pull them out of boots and then remove boots from cylinder head? Disturbing the boots can cause leaking and, in addition ,there are o-rings sealing boot flanges to head. visit cycleorings.com

[stevey9]

No I left the boots in place. I tried spraying starter fluid on each one to see if it reved up any, but it didn't. They are also still very malleable and have no cracks. However I'm leaning towards the o-rings as well

[Nessism]

No I left the boots in place. I tried spraying starter fluid on each one to see if it reved up any, but it didn't. They are also still very malleable and have no cracks. However I'm leaning towards the o-rings as well

You might want to check the Newbie Mistakes thread listed in my signature...