The International CBX Owners Association

Hi, I have a recently acquired 1979 CBX that is in very good shape. Previous owner had the carbs cleaned. When the bike is fully warmed the idle hangs at 2.5-3k rpm and is very slow to return to 1k rpm idle. I have checked all throttle cables for hanging up and lubed them. I am looking for guidance to resolve starting with simple stuff to check before tearing into the carbs. I am wondering about carb synch but not sure it would cause the issue I am having.

Otherwise the bike runs great and is very strong and smooth in the upper revs.

thanks for any help

Could be sync issue, maybe an air leak?

i'll see if I can detect a vacuum leak in the intakes

Like Mello has pointed out, synch and air leak should be checked first.
A couple other things to go over in this thread from some carb brainiacs.
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