Home › Forum › Ask A Member › 115 Evinrude Over Heat › Re: 115 Evinrude Over Heat
OK, well this is an interesting mystery. You mention the owner pulled these chunks out of the two idle/exhaust relief holes near the top of the exhaust housing, correct? Those pieces sure don’t seem like deflector fragments, but who knows. The other thing that puzzles me is that how those chunks got through the thermostat/ relief valve. I can’t think of anything after the thermostat/relief valve that is plastic. Are you sure those aren’t impeller chunks? How long has your friend owned this engine? Any previous overheats, water pump failures/replacements? It also seems strange that those fragments would just sit in those relief holes without being blown out of there. I think Bill raises a good point, it is possible that these chunks came out of the exhaust, the question is how did exhaust chunks work their way back up to the relief holes. I guess I would start by pulling the gearcase to see if any more chunks are trapped in the exhaust cavity, then pull the thermostat and heads.
Interesting project indeed, could be a real can o worms though. Let us know what you find!