My father, who was just about the wisest man I've ever met, as well as the best carburetor rebuilder, had a comment about automatic chokes- - - -"They're smarter than all drivers, and most mechanics!" A properly adjusted automatic choke KNOWS when the engine needs a richer mixture, and provides it at exactly the right time and amount. It never forgets to release itself, as long as you provide it with a little heat to tell it when the engine is warmed up sufficiently that it doesn't need the richer mixture. Wrapping a few turns of copper tubing around the exhaust pipe and plumbing the air that passes through it to the chole housing is a pretty foolproof method of providing that heat to the choke coil so it can release at the right time.
Jerry
I will second that in a heartbeat...especially the part about being smarter than I am. To me it is about like indoor plumbing. A very nice convenience. And I don't mind admitting I remember having to use an outhouse on nights when the temperature was single digits and the wind was howling so much I was sure it was going to blow the thing into the next county with me in it. Run the other end of that copper tubing back up inside your air cleaner and you'll have a nice sealed system, too.
