Can't get the idle right

[JOES31]

Just went out to try the propane trick and there is fuel all over the floor. Great and I put a new Viton float valve in. It didn't leak when I tested the float level. I set it for 5/8 below the top housing. I let it sit for over an hour to test for leaks. I would think there is contamination in the fuel but the tank was flushed and I have two filters on the line. The carb was sitting in Chem Dip for two days and rinsed with water then immediately sprayed with carb cleaner. I put a wire through all the passageways and re assembled it. It's got to be clean.

I guess I am back to the drawing board. I will disassemble it again and spray it with carb cleaner. I am not too thrilled with the mechanics of this Zenith. I'll put the other carb on and try and get the idle right otherwise I have a Tilitson I could rebuild and put on. Maybe they made Tilitsons because of the problems with these Zenith carb. They don't seem very reliable.

By the way when I look at the design of this carb I would like to know, when coming to a stop what stops the float from shutting off the fuel? I have heard of stalling problems when coming to a stop. Makes sense because of the design. Why wouldn't it stall?

Tom Thanks for the tip. When I gapped the rotor and cap I do remember that one of the contact points was gapped to far but then I had the other three perfect. I will get set the contact with the larger gap first and then file the other contacts. That might be the problem.

Everyone thanks for the help. I really appreciate all of you taking your time to help me.

Joe