Other than a shot o ring, what could possibly be a reason for water exiting from the head? I was flushing the ski, started it first, did a half turn of water pressure from the hose and water started coming out of the head. Do i need to lubricate anything to prevent this incident from damaging the engine? It still starts and runs normally so I know the engine isn't flooded I just don't want to ruin it by trying to maintain it.