hello i was thinking of buying this motor its probly about a 1970. wanted to test it before i bought it. there was no stream of water coming out when the motor was running.is there supposed to be a visible stream on this motor. had it in a barrel of water. it ran for 10 minutes pretty much at idle then died. it was sprinkling rain and the drops were sizzling on the motor. also when it died smoke or steam rolled off the motor.is this motor any good now or can i just replace the pump. what does a motor like this go for.thanks for the help.