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Re: HELP - high idle - low idle problems 200 1981

posted by  someone claiming to be Brian Garrett on  Wed Nov 14 07:18 CST 2001 [RELATED]

The C.I.S. motor can cause this sort of problem, so can a leaky intake manifold gasket or any other major air leak. I don't think the '81s had the C.I.S.system though. I'd check out the aux. air valve mounted on the side of the head it should be open when cold (sort of a half cresant shape)and closed off when warm.(after about a min or so)If not, rap on the side of the unit lightly and see if it then snaps shut.If it does'nt, check the electrical connector that goes to it to see if you have voltage.If you don't have voltage it is in the wiring, if you do have voltage it is a stuck valve and will require a thurough cleaning with carb cleaner to free it up. Hope this helps B.G.





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