Puff Out Through Carb During Starting (Video)

It's electrical, IMO. Like an MSD failure. It's not uncommon. I don't know how to test for it, though as I've always tried to steer clear of MSD stuff. I've used it in the past and worked on it for others, but I've never really cared for it. Some people swear by it and good for them. I never have. DO you have a points type distributor to throw in and just try? I bet it'll run fine then.
I had a bad coil do something similar to that, do you have an other coil to try.

I dug up a points distributor and coil to give it another go. I really didn't think it would be the coil because I checked the ohms on the primary and secondary last night and they were in spec. I put the coil in first since it was the quickest and it started right up. To make sure it was the coil and not just a bad connection I put the first coil back in and it was back to no start/puff out of carb.. I rotated them in and out again and the same results. The replacement coil and the no-start coil have pretty close ohm readings .5/.8 ohms primary and 5 Kohms secondary.
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