I am at my wit’s end. I have an O’Day 28 with the Universal M12. When the boat went in this year, I stopped getting cooling water out of my exhaust. There was a crack in the housing of the raw water strainer, so I replaced that. That didn’t change anything, so I replaced the impeller on the raw water pump, and the sealing gasket. I am getting water flowing through the impeller and into the heat exchanger. I can hear water gurgling in the exhaust, but very little is coming out of the exhaust portal. The engine will run for twenty minutes or more before the temp gets very high, so there has to be some water getting through, but it seems like something is obstructing the flow.
Does any one have any idea what should be next on the trouble shooting list?
Does any one have any idea what should be next on the trouble shooting list?