I tore it back down and found problem, keyway for impeller was broke in half sitting on top of lower unit seal,thanks for the info guys,hope this helps someone
I've replaced waterpump impeller, I've blew air and water through passages and their clear but but still getting no water from tell tale,took thermostat out and boiled and opened and closes. I'm at a complete loss now. Any help would greatly be appreciated 2016 mercury 15hp carburetor 4 stroke
