I own a 1985 Hunter 31 with a Yanmar 2GM20 diesel.
Due to family circumstances, I have only used the boat a couple of times each year for the past 3 seasons.
For each of these three seasons (but NEVER within the previous 20+ seasons that I have owned the boat).... I have been experiencing problems with carbon buildup clogging the exhaust elbow causing the engine to overheat and the temperature alarm to go off.
The boatyard that does my repairs suggested running the engine at higher rpms (2500-3000),
but never in the previous 20+ years had I done that, and all worked fine.
Has anyone else experienced this problem, and if so, what was the solution ??
Due to family circumstances, I have only used the boat a couple of times each year for the past 3 seasons.
For each of these three seasons (but NEVER within the previous 20+ seasons that I have owned the boat).... I have been experiencing problems with carbon buildup clogging the exhaust elbow causing the engine to overheat and the temperature alarm to go off.
The boatyard that does my repairs suggested running the engine at higher rpms (2500-3000),
but never in the previous 20+ years had I done that, and all worked fine.
Has anyone else experienced this problem, and if so, what was the solution ??