318 is suddenly doing THIS:

Went through the carb and nothing bad was found.

Still no change, so I broke out the timing light and verified timing and mechanical advance function.

I then got my spark tester and installed it, and did not seem to be losing spark at the time the choking off happens, BUT....

I'm still getting the random pops out of the tailpipes at idle and this time when the engine quit there was a small cough out of the carb.

Witht hat in mind, I dug into it further, and might have found my smoking gun:

When I pulled the coil off, the terminal end of it smelled acrid, and there was evidence of oil leakage out of the coil.

Hmmmmmmm...