I have a 99 xp limited with the 951 engine. Yesterday I was just putting around and it made a noise and started running real rough. I pulled the spark plugs out to find the engine full of water. I spun the engine over with the plugs out and got most of the water out of the engine, also put some oil down spark plug holes and spun over some more to try and lubricate the engine. What could cause this? It was running fine up to this point, also took a compression check on it this morning to find both cylinders had 130psi. I feel this ruled out the head gasket. What else could this be? Any suggestions would be appreciated. Thanks in advance!!!