So being curious, I tried a different coil. We actually got it to run rough, but running. Adjusted fast idle, got it actually running as smooth as ever. Put it on reverse, good. Backed it out of the garage. Uh oh, squeaking noise! Power steering belt was loose. Turned the car off, checked it, tightened it, went to turn on the car. Starts, but just dies. No sputter, no fighting, just dies. Roll it back into the garage. We tuned it again, backed it out, and dies a slow death in reverse. Roll it back in. There is a hissing noise from the carb,. And idle does change slightly when air filter is on. It has to be the carburetor. It can't be timing or electric. Not a vacuum leak, now steady at 20. I'm going to tear it apart this weekend. It was very dusty when I got it, who know where that dust got into it.
