I removed the brass fitting that goes to the block and fired up the engine. Boy that makes a mess. Water everywhere. It was a good thing the oil dipstick was down all the way. She now pees like a young man. Thanks for the tip. I found a part of an old impeller that came out.
1. I replaced the water pump last year following a video. I didn't get much out of the pee tube just a dribble. 2. So I ordered a new thermostat. And when that was apart dumped water through it with the lower unit removed and it came out both the pump tube and the exhaust point. Flow was good...