Sunday was a very bad storm here and the rain was enough to seep through the boat cover and overcome the bilge and almost sink our boat, the engine was completely submerged. Raised it out, changed oil and filter, pulled plugs (and changed them), shot water out of the engine for probably an hour. Everything was filled with water, but today I got it running again. there were a couple times when we thought we had gotten all the water out put the plugs back in and it cranked for a split second before stopping, at which point we would pull the plugs and more water would come out. Now its actually running just the way it was before all of this. However there is now water in the oil, giving it a milkshake like color and look, it also spurts oil out of the oil fill cap every now and again when running. Its an open loop system, pulling water from the lake, non saltwater lake. its a 2007 Speedster with the 215 hp sc and intercooled 3 cylinder. Ive changed the oil 3 times at this point (though I did only change the oil filter once). Im worried that when I went to start it there was enough water in the cylinder to blow the head gasket out. I did take it on a short ride and its revving normally, and the check engine light isn't on with no codes. Should I just keep changing the oil, and change the filter? should I do a compression test, will that give me the answer? Im very used to working on 2 stroke marine engines but this is the first 4 stroke I've had to actually diagnose and work on (I've sunk and cleared 2 strokes many times on my jet skis). Before all of this it was running normally and when I changed the oil after it had been sunk there wasn't really any water in the oil, and it was a normal used oil color, but there was a little water, I just didn't even crank it over after it had been sunk so the water and oil didn't really mix.
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