How do you know when your waterpump (is that Impeller?) is busted?

[longhotsummers]

I had a similar experiance shortly after I bought my first boat. I had beached my boat in the sand and must not have pulled the engine up fast enough. The sand tore apart the little impeller. I didn't know it wasn't pumping water until the engine seized. Luckily the engine wasn't permanently damaged and I repaired the water pump myself. The kit was only $25 and it took about an hour- I'm not terribly mechanically inclined, but it wasn't to tough.

I would say that if it is still pumping a good steady stream then you are probably ok. Just take a peak out the back every so often to make sure that it continues spraying.
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