I bought this boat to keep out at my lake house, and the upon recieving the boat I cleaned the carb, changed plugs and coil, changed the oil and cleaned all of the connections. Ran it a couple days and everything was fine, the temp was at 170-180. And oil press was fine. Then I was pulling a tube and the motor all of a sudden cut off. Just died down like I ran out of gas. I still had half a tank and the engine was getting gas. But the boat was now reading 220 degrees. So I let it cool down.to 150 and tried starting it and it wouldn't start it just backfired with a lot of white smoke. Checked my coolant tank it was bone dry. And in my gas filter had a little water. I emptied my gas tank. Now for the engine what procedures should I do to find the problem, also can I even buy parts such as gaskets for this motor.