Just bought the motor used and thought Id hook it to water and c if it ran the way the guy said it did, well no pee. When I took the impeller out I thought it looked awful good, well I put new one in and still no pee. Whats the deal. What did I miss. I know the water pump is lined up properly. What happened. I held my hand on the head till it got too hot and shut things down before too late. Is the thermostat stuck???