Can any DIYers tell me why my 2008 Troy Bilt Kohler engine would be running extremely loud and I mean loud, it does run constantly, but very very loud? What should I check? I did check the muffler and one bold is missing and the other was loose, so I have ordered the replacement and a new seal to start. However, when I tightened down the other bolt it did not resolve the issue.
Things that might be the issue here:
1) Muffler is rusted out and no muffling as it should. 2) The gasket between the engine and the muffler is missing or compromised. 3) There are other loose bolts, perhaps the head bolts or the spark plug. Either of which can allow compression to leak out and be quite loud.
I suspect you'll have some success with your replacement muffler.