I have a 1981 2 cylinder Evinrude. I bought it new in 1982. I have only used it in fresh water. I keep it in my house cellar where it is never cold. The engine runs great. The engine is now 29 years old and I have never replaced the water pump impeller. As I said it runs great. How can I tell if it needs a water pump? You would think it would have failed by now.

