[Big hammer]

One cold Sunday morning our family car wouldn’t start, dad was using starter fluid and it BACKFIRED through the carburetor catching his hair on fire !

Later we had an AFTERFIRE (backfire) and blew the muffler apart ! the guts in the muffler began to burn so we kicked snow on the flames and put them out .

Watching auto racing on short tracks and sometimes you’ll see afterfire ( flames ) coming out of the tailpipes

When your popping occurs try adjusting the GAV , open it a 1/4 turn and or close it a 1/4 turn. If this doesn’t help adjust the timing lever, advance it and or retard it . I like to use the tools on hand to help identify any issues before removing your head and doing a valve job .