I'd like some input or verification please.
I had decent water flow from my port engine, but it is overheating just enough to set off the alarm (180 degrees). It had been almost two years since the raw water impeller was changed by a Merc. shop. I undertook the project to change it myself. I did successfully (verified by two neighbors and a mechanic). When I started the engine, no water circulated (did not come out of the exhaust). After much head scratching by a group of us, we unscrewed the lower drain plug on the pump, started the engine briefly, water shot out of the opening, then shut the engine down, and screwed the plug back in. We got water flow out of the exhaust then. Service manual didn't mention having to bleed the system, just replace the impeller and crank it up. Have I had a unique experience, or is this a step I will need to take when I change the starboard impeller.
I had decent water flow from my port engine, but it is overheating just enough to set off the alarm (180 degrees). It had been almost two years since the raw water impeller was changed by a Merc. shop. I undertook the project to change it myself. I did successfully (verified by two neighbors and a mechanic). When I started the engine, no water circulated (did not come out of the exhaust). After much head scratching by a group of us, we unscrewed the lower drain plug on the pump, started the engine briefly, water shot out of the opening, then shut the engine down, and screwed the plug back in. We got water flow out of the exhaust then. Service manual didn't mention having to bleed the system, just replace the impeller and crank it up. Have I had a unique experience, or is this a step I will need to take when I change the starboard impeller.