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2000 Seadoo GTI - Crank Damage?

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What is the proper direction of the water flow through the jacket? The left side looking from the back of the ski, is the in and the right is out, so then why does the water hose to flush it from the back of the ski, to into the out on the jacket, is it supposed to flush backwards? Or was it put on incorrectly previously by the prior owner?
 
Yep, it flushes backwards. So when you flush you pinch off the line aft of the flush inlet. Don't forget to remove the restriction when you are done.
 
Yep, it flushes backwards. So when you flush you pinch off the line aft of the flush inlet. Don't forget to remove the restriction when you are done.
You have to pinch a line? Which one is that? What's the purpose? And what is the result if you don't? Damage, or just not flushed properly?
 
Nah, it just forces the water backwards into the engine otherwise it will take the path of least resistance and flow right out the back of the ski and not go through the engine in sufficient quantity to keep the engine and pipes cool.
 
Nah, it just forces the water backwards into the engine otherwise it will take the path of least resistance and flow right out the back of the ski and not go through the engine in sufficient quantity to keep the engine and pipes cool.
Ok, which line gets pinched? And where does it expel at that point? How much extra runtime does this provide?
 
Nah, it just forces the water backwards into the engine otherwise it will take the path of least resistance and flow right out the back of the ski and not go through the engine in sufficient quantity to keep the engine and pipes cool.
I had no idea this had to be done
I’ve only been flushing from the hose connection in the back.
 
HOLD UP !!!! You don't have to do that on your model. You have a screw type hose connection in the back of the ski. You're good. No need to pinch the line on that ski. I thought you had an older ski.
 
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Agh! Why can't anything just go right and not fight me every step of the way?! D:

So I took out the rebuilt ski today for the first time... totally started off fine... but did not end fine...

The ski started up and ran on the trailer perfectly. Got it idling and warmed up for a few mins in the water, looking over everything and all seems well.

Took it out and it was fine for a few minutes and then I lost all power, idling stalled it, WOT stalled it, and anything in between did nothing really helpful but keep it running. So I had to limp it, feathering the throttle to get it back to the trailer the best I could.

Had minimal tools on me, so I trailered it and took the running ski out for some fun for the day. Got home, cleaned the running ski and started digging into the problem child... Pulled the plugs, first thing I see... water. :,( So I pull the water jacket head off to assess the damage... completely full! So there has to be a clog somewhere not allowing it to drain properly.

On the back of these skis it has a little water line that shoots a tiny steam out to show you have proper cooling system flow. Was fine on the water, didn't think anything of it. Well I pulled all the lines in the T split in the back of the hull. 2 of 3 were fine (mostly). The line feeding the T and the one running out the back to indicate flow, both ok. Of course the most important one that actually does the draining was clogged and hard as a rock. Once the line was removed the jacket drained right away. Replaced those lines...

Now to deal with the water that got into the cylinder and likely into the crankcase along the way... path of least resistance. Wiped out as much as I could, blew the rest out with the compressor and then hand oiled the piston and cylinders. Put it all back together and grabbed some fresh plugs. Fired right up, ran well, full power. Blipped it a ton until I didn't see any more water coming out of the back each time. Kept it running a bit longer to get it fairly warm/hot. Then pulled the plugs and let it vent the steam. Did that a few times.

I pulled the head off again and left it that way for tonight, freshly oiled it all again, poured a little bit of oil down into the crank and rolled it over by hand a number of times. Lightly misted with WD40. Hoping to have cleared it out as much as possible until I can take it back out tomorrow.

Expelled / Evaporated / Chemically Displaced / Lubed and hopefully protected a bit extra with more oil poured in. I've read that as long as you prevent rust or anything from setting in, you'll be OK even if water gets in the engine. And that the best way to clear it up is to take it out and blast it full throttle for a good bit to make sure everything bad gets burned off. That's my plan for tomorrow, put it back together and then take it out and go crazy with it, assuming it isn't taking on water still...

Moral of the story, check all your hoses dang it! Regardless of if it looks like it should be OK!

I threw a splash or two more of oil into the premix to not only help the break in, but help with this issue as well. Do you experts think I should do anything else, or shouldn't have done something I did? Let me know your thoughts, or if you've seen or experienced something similar and how it was addressed.

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So hey, I am stuck scratching my head here on this one now...
I can start it and run it perfectly fine, I can get it running great on the hose.

However, when I drop it in the water, it starts and idles and takes off fine, but feels like it wont go past half throttle, like it starts to bog when I give it more gas. What should I look into for addressing this?
 
Carbs and fuel system.
See that is what I thought too, but why would it be fine to rev like a monster on the hose but not in water?
Something about extra load perhaps? What would I adjust to make it better? Can I do it without removing the carb, on the water adjustment?
 
There is no load on the engine out of the water so running it out of the water will tell you absolutely nothing other than it runs.

A stock seadoo will run perfectly with all book carb settings so if yours doesn't then something is wrong.
 
not sure if it the same but on my older ski it was the voltage regulator
put a voltmeter on your battery and ride it and see if the voltage goes past 14.4volts
mine went to 17volts
 
not sure if it the same but on my older ski it was the voltage regulator
put a voltmeter on your battery and ride it and see if the voltage goes past 14.4volts
mine went to 17volts

I will try that after checking carbs, why do you think voltage would cause improper power? Not firing at the right times? Seems like that wouldn't be related?

I have a dual carb setup now, as opposed to the stock with the airbox. Not sure how to check these and get them set up together properly.
 
You can not run the stock carb settings with that air filter. If you are, that is why you are running really lean especially on top end.
 
You can not run the stock carb settings with that air filter. If you are, that is why you are running really lean especially on top end.
I figured that it was tuned when I got it, since everything else was taken care of.

Do you have any references for how to tune it? Or just trial and error? I'll likely take it out tomorrow morning for a bit, so any ideas for testing on the water would be great!

I'm gonna look and do research on it too here in a sec but would love to confirm with you smart people to make sure.

If carb tuning doesn't resolve it then I'll look into power, but by the sounds of it, I feel it likely is just not set up right.
 
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