if it's more than 2 years old then replace the impeller!

"Weldo60" wrote in message
ups.com...
Is there a way to test the stern drive pump before I pull my lower
unit. The part that gets me is that I am pulling water up into the
engine. Perhaps it is just not enough. I pulled the circulating pump
and it is functional. When I pulled it a fair amount of water came
pouring out of the system, so I find it difficult to conclude that the
stern pump is not functional.