2007 seadoo GTI SE-water in cylinders...BUT?

[Tompands]

I went to look at a 2007 GTI 155 today. The guy said it only needs a battery-runs fine! He bought a brand new battery and installed it. Motor wouldn't even turn. I was about to leave , then I asked him to pull the plugs out. He did and all 3 cylinders were full of water. He then took the water hose, hooked it to the ski and turned the water on. I said "What are you doing"? He said " I always turn water on first"!!! I told him that was wrong and explained the proper way to do it. We dried to cylinders out best we could and put plugs back in. Cranked it over and it started. It ran about 3-4 seconds, then shut down again and was hydolocked again. Would I be stupid to buy this ski??? I think HE hydolocked it by turning the water hose on. I talked him down pretty good on the price and he agreed. What damage could there be to it? If I'm gonna buy it , I need to do it soon and get it home before it rusts up. I heard it start and run...she sounded strong. Just the water issue, ski looks great. I need some quick advise.

 

[skiasylum]

The question is how long was there water in the cylinders before you got there? Maybe boroscope the cylinders to make sure there is not a rust damage. Many ops have goofed up on the water and fixed their skis. Download a service manual and follow the procedure for water flooded engine, getting the exhaust and intake systems drained as soon as possible.

 

[dcm0123]

I cannot rationalize why it locked a second time unless the intake was filled with water which was sucked into the cylinder while running.

I am not 100% sure but turning the hose on to early will back feed water in through the exhaust, not intake.

If this does not have an inter-cooler (which often leaks water into the intake), the hull may have filled with water or was flipped over.

In my opinion you want to buy at salvage value unless you can diagnose this before you buy it so you know how much it will cost to fix. As noted above, there could be rust in the cylinder.

 

[Tompands]

I went ahead and bought it. brought it home and sucked the oil out of it. I made sure cylinders were dry, spayed WD40 in cylinders. Put fresh oil and filter and new plugs. I started it and it ran fine for about 30-40 seconds, then started beeping , so I shut it down. Checked the oil again and it was milky again. I took it to my local Seadoo dealer for a boil out. $600+ . See what happens. I hope they give me good news. I did get it for a great price. Less then salvage value.

 

[skiasylum]

For future reference if there is water in either the intake or exhaust when you run the ski you suck water into the engine thru the valves into the oil. OPs have changed oil 6 times and still get water in the oil because they don't follow the service manual. Only one oil change is required. If you do the boil out procedure without draining the water out of both systems it won't do any good.

 

[ski-d00]

I cannot rationalize why it locked a second time unless the intake was filled with water which was sucked into the cylinder while running.

This is exactly what happens. I'm sure he had the hose running at least for 5 minutes and filled everything up.

I am not 100% sure but turning the hose on to early will back feed water in through the exhaust, not intake.

It backflows through the exhaust into the cylinders, fills them and then continues to the intake manifold, then will flow through the throttle body and fill the hull itself it you let it run long enough. Have seen hulls completely full of water where people completely forgot to turn the water off.

I've bought plenty of flooded skis and as long as you get to them in the first few days, they are normally fine. I wouldn't pay $600 to the seadoo dealer. All you have to do is remove the intake manifold, 7 bolts and some electrical connectors, and dump out the water. Then change oil and filter, then go ride it for 30 minutes idling with oil cap off and dipstick out to release steam. Then I'll bet it is as good as new.

The seadoo manual does say to drain the exhaust but of the 100 or more I've done I've never done this. A few times I've had to tilt the trailer which drains the exhaust good enough to start it and then the exhaust blows out the rest.

 

[dcm0123]

How does the dealer "boil out the water"?

 

[skiasylum]

They clamp a cooling hose and and run it hot enuf 212 f to boil out the water. The procedure is in the service manual and is easily replicated. Check the oil again when you pick it up and after 5 hours to see if it’s milky again. If it is they did not drain it.

 

[Tompands]

update.... Took it down to the dealer. They removed the manifold and did the boil out . all is good. It survived the water intrusion. Cost me $632 but I just wanted to know for sure there was no other damage. They checked the whole machine over and the only thing they commented on was the pump has slight scaring but nothing to worry about right now. They just said to run it and change the oil in 10 hours. I still dont have what the original asking price was, in it, even after the $632. So I feel good about the whole situation, Got the ski for cheap, and now its running good with fresh oil , filter and plus. I'm gonna go run the hell out of it today.