It's called hydraulic lock, the piston is trying to compress the water and can't, you will need to remove the spark plugs and turn the engine over to push all water out of the cylinders, don't try and turn it over anymore till you have done this, you will do a lot of damage if you do, you will also need to change the oil once you have got it going again, hope this helps
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It's called hydraulic lock, the piston is trying to compress the water and can't, you will need to remove the spark plugs and turn the engine over to push all water out of the cylinders, don't try and turn it over anymore till you have done this, you will do a lot of damage if you do, you will also need to change the oil once you have got it going again, hope this helps