Once I get the damn thing off, I’m going to change it lol
I’ll report back later tonight. I’m also replacing the plugs, just in case the fried stator fouled them out.
For the sake of learning and possibly helping someone else down the road, I’ll try to start it with the new flywheel only, to see what kind of difference that makes before I replace the plugs.
My hypothesis is that there’s a weak spark - either from fouled plugs or a weak current from the stator due to a demagnetized flywheel.. enough spark to fire and idle, but not enough to keep up with high rpms, explaining my exhaust explosion.
Now, correct me if I’m wrong, but this engine is a parallel twin, meaning the pistons fire at the same time, correct?
If the new flywheel and plugs don’t work - could I have a valve that’s hanging up leaving unburnt fuel in the cylinder and then when it does spark there’s too much causing the backfire? Even as I type that, I still think the simplest answer is that the plugs are bad causing a misfire and the unburnt fuel is igniting in the exhaust.