Quote Originally Posted by SquamInboards View Post
Well, my phone just told me you replied. But it didn't tell me to go back and read the other post you just wrote about your failed muffler! So I'm glad you found a likely cause.
Oh, also I believe the max. rating on regular exhaust hose is 250F. So where mine was hovering in that range it would take a while but eventually damage the hose. But I could use the boat for months sometimes without a problem because my issue only appears at extended idle, not the other way around. In your case, you are probably wise not to have tested its maximum temp.