Ryobi lawn tractor smoking
I need to know if I need a new muffler. I took the muffler off and thought the smoking was due to excess debris so thoroughly cleaned it and put it all back and it is still smoking (on top of muffler) When I removed the old muffler it had a rattle. I don't want to spend the money on a new muffler if it could be another problem. It is not an oil overfill or air filter. I had this same problem last season but still could use the mower. Oh the mower is about 10 years old.
Thanks for any help