If your hearing the misfire out the exh then it’s most likely a tuning issue or you could even have the firing order wrong.
If the misfire is causing popping back thru the Carb then you may have a intake valve set too tight.
If all was fine and this issue just started after doing something to the motor, then it’s related to that last thing you did more then not!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
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