Originally Posted by wcmorrison

I would also check the rear plate to make sure the seal has not dried out. Air leaks appear anywhere and they cause your idling problem. Check around the carb throat, make sure the two screws that hold the carb in are installed and tight. Maybe the 0-ring at the carb has dried up, sealant from the auto store will seal that up for you. And check you fuel lines, they can develop holes and leak air in or fuel out of them. Blow out your carb with high pressure air. Crud can block things momentarily. A little attention and the engine will be purring along.