When I cast off I need near wot to push water into raw water system, or engine will overheat. I find it takes about 30 sec of near wot before temp gauge literally swings down to 150. Before that it was slowly climbing above 180. Impeller replaced 1 season ago. Without wot, engine would beep and cut out at 210. Once waters in the engine, im fine for the rest of the day.
Thought of priming engine with water through the hose but I suspect it would leak out. no clogs visible on the inlets of the leg. Any other common suspects or is this normal?