[Golf Cart Surgeon]

Alright... so I've just got a ridiculous amount of carbureted carts that come in with backfiring. sometimes, a spark plug, or a new carb or an adjustment will fix it. Sometimes the gas is bad. But every once in awhile, we've got a cart or two that nothing seems to fix the backfiring issue.

What other options can we look at to try to beat this out? Ignition coil? Governor? Muffler? I'm stumped on a couple carts.