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Stumbly, technically speaking.

PostPosted: Tue Mar 19, 2013 8:54 pm
by Tims500
1980 CX500 Deluxe:

Its kind of odd, and at lower RPMs, almost gone with the choke on and cold, giving it a little more throttle smooths it right out.

Any idea's? Thought I'd get some before pulling everything apart.


Re: Stumbly, technically speaking.

PostPosted: Wed Mar 20, 2013 2:04 pm
by Gman
Do the usual checks in the Carb section for things like carb boot leaks.As it smooths with the choke try making the mixture a little richer.What colour are the plugs after the engine has been ridden.You cannot check plug state on an engine that has just been started or cold.


This is usually a symptom of either a clogged low speed circuit in the carbs or float height/needle valve problem,


Tip:I take my plug spanner/wrench out with me and stop at a parking spot and take my plugs out from time to time just to check their colour.