I don't know if this is your case but, I had an old Nova with a inline six and it had a decelaration(?) solenoid on the carb that when the engine rev'ed then when closed throttle, it would ease the linkage back to idle. One day missing around the engine I disconnected it and went to the parts store and same thing happened to me. I reconnected it and everything was fine. I know some carbs use vacuum and some use electric lines to control them so look at the carb first. L8r,


TheBigUgly