Originally Posted by Don L
I carry a spare impeller and know how to replace it. I also have temperature indication and alarms. So I have 3 indications that are available before the engine is getting into an overheat (I also don't normally push my engine hard for long times)
When my boat is laid up that seawater pump is flushed with fresh water and then with glycol.
Did a poll
once and it isn't common to replace requarly and the number of people who have had their seawater impeller fall apart were a lot fewer than what gets talked about.
Not saying there is anything wrong if someone whats to replace theirs every year.
Only time I ever had one destroyed was on my diesel generator
, and that was due to cutting it on and forgetting to open the seacock.
I did have a boat years ago with an Atomic Four in it and when I opened the pump housing to replace the impeller (due to an anemic amount of water coming out of the exhaust
when I bought it) and found an impeller with only one blade left.