So ; 90 miles in to a 300 mile day my 1985 R80 does this ;
cough cough , engine dies momentarily, then BIG BACKFIRE !!
Then starts running smooth as usual but it actually felt stronger ???
Guy who was running behind me asks at the first stop, WTH ???
Never had that happen before, and the bike seemed to run better afterwards ??
Ran fine the rest of the day ??
Any ideas ??