I was riding underwater right after changing the diff fluid, and the seals blew. What brand seal should i go with, and why in the hell did it happen? On top of that, I can not run it for more than 10 minutes without it dying. i am putting new gas and new spark plug. And i know water didnt get in the motor because the oil is still golden brown. Help.

 

New gas and same plug (because it was fine) Motor turns over, is getting gas, still won't fire. Engine has been running with a lot too much air for a while before it wouldn't fire. This might have something to do with it?