Choke driving me crazy!

Well, first you have to find it. I think they only started using them in about 68. And I think it was in the drivers side. With a cold engine, you just reach down and see if it turns. There is a big circular counterweight attached to the valve by a pivot-shaft. It must rotate freely, from it's normally closed position to about 90* further which would be wide open. Then there is the clock-spring which should be trying to keep it closed. And on the other side is an anti-rattle spring.
So that's all the parts there are too it, but you still don't know if the valve is on there. Not to worry, I've never seen one missing, although I have not seen that many,lol.
But I gotta tell you, that the most troublesome part of this system is the passage under the carb. It is all too common for it to become clogged with carbon. This carbon is actually formed from the oil that is sneaking by the worn parts of the engine and ending up in the exhaust system. I have removed many intakes to chisel out these passages,on both sides of the gasket; that is to say,also in the heads. This used to be quite common on higher mileage engines.