sclem

I have a 1996 seadoo xp that has ran great for years. This summer i took it to the lake and it died on me when i was out their wouldn't restart. So i took it home and realized it would not turn over because water in the engine. So i got the water out of the engine, and she fired right up. Then went out on the lake again and it fired up but when i went to give it throttle the engine would shake really bad and not give any power, eventually it did get up and go but then it would return to shaking and no power. I noticed that the plugs were still wet a little and the flame arrestor compartment was a little wet. Wondering were i should start to diagnose promblem. Any help would be well appreciated.