Hi everyone. Thank you for taking the time to read this. I am having a really big problem with my sea-doo boat and desperately need help from the boating community. Let me explain it as best I can...
SUMMARY: Water is getting into the cylinders only when boat is off and floating in water, it seems. Boat won't turn on and has left us stranded out in the water on numerous occasions.
ISSUE IN DETAIL:
Let me run your through what is happening: My dad and I are taking the boat out into a salt water intercoastal. The boat goes into the water via a boat ramp and starts perfectly right away. We ride about 5 or so minutes to a sandbar and anchor the boat in about 1 or 2 feet of water (occasional waves from passing boats, but nothing big). We stay there for approximately an hour ( it has also happened on occasions where we've been there for less and more time). When we go to turn the boat back on, it cranks up but doesn't turn over. RPMS reach, at most, 360. And there it is.
First time it happened, we got towed back in, changed the 10-year-old battery for a new one, and thought the issue was fixed since the boat started right up on dry land up on the trailer. Went back out a week later, got stranded again and had to be towed back in. Boat gets put up on trailer, taken home, and then starts. That's what made us think something was up with the cylinder. Took it to the shop, and the guy told us how to check it:
We took out the spark plugs and tried started the boat up. What came out was a BUNCH of salt water. We cranked it for about 1 minutes, per instructions, until all the water was out. With the Florida sun, the water on the spark plugs dried up, stuck them back in, pushed the button to turn on the boat and BAM...boat turns on just fine and sounds brand new...just beautiful. That same day we did this, my dad and I took the boat out to run it in the water and test it. So we took it out, drove it around for 30 minutes without stopping, then took it right back to the boat ramp. We turned it off at the ramp and immediately put it up on the trailer, took out the spark plugs again, and cranked it up. No water. Only fumes. Beautiful right? Well not so...
Today, went out to the sandbar again thinking this issue was fixed. Turned the boat on at the ramp...turned over like a charm. No issues. Went to the sandbar and fished for about an hour. Went to changed fishing spots...and the boat wouldn't start. Still wouldn't turn over..AGAIN. We took the boat to a little island in the intercoastal and took out the spark plugs. They were drenched in sea water, and the cylinders had a pool of water in them. We have valves on our boat the block off the water intake for towing. We closed valves and cranked the motor to dry the water in the cylinders. Once that was done, we put the spark plugs back in, dry, and turned the boat on. IMMEDIATELY, we opened that valves up to let water flow through. Boat started back up, took it to the ramp, and went home.
CONCLUSION:
We simply can't rely on our boat anymore. It doesn't feel safe to go out on it 
. It's a shame. But we are getting closer to understanding where the problem may be. Water is clearly getting into the cylinders...but only when the motor is off and the boat is floating in the water??? How is that possible?? What would that indicate??
Thank you all for taking the time to read this. Any ideas, suggestions, etc. will be tremendously appreciated. Thanks guys! 
Regards,
Andres
