My 99 xp was running fine, and made a noise and started running rough. I shut it down, pulled the plugs to find the engine full of water. What could cause this? It was running fine up to this point and I hope I did not run it long enough with water in to hurt the engine. I have gotten most of water out of engine, and put some oil down the holes to try and lubricate all I could. Any help, suggestions, advice would be appreciated.