Recent content by Affordable in Indy

I'm working on a B&S two cylinder engine 44K777-0125-G on an Exmark zero-turn. The exhaust valve seat came out of one of the heads. The valve got stuck open. That allowed the push rod to pop out of position. It ended up twisted and mangled inside the engine which also destroyed the camshaft. I...

I think you're barking up the wrong tree. If the engine was cranking and just popping and backfiring when you sprayed carb cleaner into the air intake, that sounds like a valve problem. You might have a bent push rod or valve lashing way out of wack. Take the rocker cover(s) off and see what's...