2006 Honda 225 HP with water in all six cylinders

[baronpilot]

450 hours water in all six cylinders but not in oil. Head gaskets fine, no known cracks in heads or block --- engine serviced at same location since new religiously every 100 hours. Has anyone experienced similar problem and know the cause?

 

[Mdoherty]

What do you mean by water in all six cylinders. They can't all be filled since the first one will hydrolock before the others can fill. How did you determine that all six have water in them?