I have 8.1 crusader engines in my boat, the boat had a sudden stop and water got in the port engine cylinder and lock it up, I relieved it by pulling the plugs and turning the crank by had, water came out of the cylinders but still remains in the oil, I changed the oil 3 times but water remains, when you start the engine the oil and water mixture rise up the dip stick, also engine will not get up to full tempeture any thoughts of how to get the oil out or could it still be coming in some how?