Just got in from mowing. On my last one my mower quit just all of the sudden. It didn't want to start back and while trying to start it, fire started coming out of the muffler. Not a backfire, but something that looked more like a tiki torch and it burned for 2 or 3 seconds. I took out the air filter element to make sure it wasn't damaged, let it sit for a few minutes, then started it. It ran perfectly after that. Any similar experiences or opinions?