DR 250 idle problems

I have a 1990 DR 250S that idles erratically. If I turn the idle screw in, the idle stays the same no matter how far it turn it, until the throttle is blipped, then it settles at 4000 rpm. Then if I turn it out slowly, it'll finally drop to about 1200 again but it tends to stall easily. In adition, if I don't turn it down far enough, it will stay reved up when shifting gears. There is no in between. The bike runs great otherwise. Any ideas?

Have you cleaned the carb. lately?

My bet is your choke is sticking. Clean that little bugger, and post back:thumbsup:

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