Problems

[MattMigues]

Originally Posted by CajunChristian

I have seen 40hp Mercs do this. The water pump impeller would spin on the hub. At idle and low speeds, it would pump great. At anything above 2500 rpm, no water. That was a factory defect in the impellers. Yours sounds like a frozen impeller due to low temps.
D

could be, I was out hunting Friday before last in all that sleet and freezing rain, Saturday I was back everything still frozen over let motor warm up a couple minutes then left but that afternoon on my way back motor sputtered on take off but I thought ole 2 stroke cough... Sunday I didn't make a mile and poof. Mechanic said whatever it is wasn't something pre existing it's something that had just happened, I just called and said change water pump also, being that these guys are only charging me parts at cost no labor I may as well.