Ive got an 86 22r that just recently started running rough at idle. It kind of sits there and lopes, or sputters. Almost like its missing. Soon as you get on the gas it smooths out fine. The exhaust sounds more like a poooof poooof. If you have any ideas let me know. Ive cleaned the carb, and checked for a vacume leak, but could have easily missed something. Thanks Stinson