We left the dock and the port engine temperature was soon a few degrees higher than normal. I shut it down, nothing obvious in the engine room. Restarted and temp started to rise again. Shutdown and went back to the dock. At the dock I crawled out side the port engine. This is what I saw. When I opened the cover the impeller was melted. I pulled it out and was going to install a spare. However, I noticed some ridges inside the pump housing. I’m wondering if I might need to replace the pump itself too. See picture of ridges.
Was the the sea-cock closed? The big-bad-Detroit-Jabsco with synthetic drive insert. Going to take a wear plate, cam insert and back cover with mechanical seal kit. Do not try to polish that out. Or a new pump and slowly rebuild for a spare with above parts mentioned. Also check your exhaust rubbers. It's a B O A T .
