It was really because I was having engine overheating problems each time out. So I tried a few things. Cleaned out the strainer. Checked impeller. And replaced the thermostat. Still had white "smoke" and what seemed like spotty water discharge.
I contacted a mechanic, Jeff. His first visit was promising. He had a Flir thermal imaging laser thermometer and saw that the heat exchanger needed help. He removed the whole thing, and gave all the pieces a citric acid bath. That bath ended up being a week long because Jeff kept ordering the wrong replacement gaskets from my local Yanmar dealer, Svendsen's.
Jeff says the issue is that the main chandlery brought up the schematics for the wrong engine. I told him to go to Dave, the Yanmar expert. But Dave is on the wholesale side. Dave called me twice to tell him what he thought I needed. But since Jeff bought the parts, I wanted to go in with him for the exchange. So we had to wait until I worked from home this past Friday, and got it all sorted.
Jeff worked 6 hours total, which ain't cheap. But he replaced the exchanger, and a few hoses. And now we have good water flow and revving the engine for 15 minutes he didn't get any white smok or heat. So hopefully I'm all set and can get out on the Bay again soon. Well, that is, after Halloween, and my Coastal classes Nov 1, 8, and 9.
