For the spark I’m gonna test my points and condensers with an ohmmeter and clean the points. I have the tool with the front and back arrows that allows me to set the timing with the meter as well. I think this repair will be a little time consuming but pretty easy.
The carb sucking fumes….what is cause and repair for that one? I’ve not dealt with it before. I have a whole other carb here If needed
Really?
Look, deductive reasoning. I told you it needs to be on a boat or test tank or Dyno.
Next best thing.....on a boat, hell tie it to the dock. Needs a load.
Answer is, look at your own video. Your motor is engulfed in smoke. Barrel is for starting or fresh water rinsing. Your motor could just be caked up.
Box fan, try it if you think I'm kidding.
Main thing is you'll never get that motor all figured out until it's out and about.