Engine had run off and on all day but was shut down to load boat on trailer. Would not start. Starter was pulled and found to have broken brush spring so was replaced. New starter would not turn engine over. Removed plugs and water ran out of all 6 cylinders. Checked oil and found excessive level. Pumped about a quart of water out of crankcase. Checked compression at 165psi +/- 5 psi on all 6. Engine probably has about 200 hours on it. What should I check next?