If it has been sitting with water in the cylinders for a couple months you may discover that the engine is seized and that you will need to rebuild it completely.
Even if it does turn over you likely have corrosion in the cylinder(s) from the water and that will damage the rings.
At this point you would be better off to the pull the head, find the reason for the problem, assess any damage to the rest of the engine and decide from there.
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Thursday, February 2nd, 2017 AT 7:52 AM