How do I fix this?

[Kleve]

2001 Seadoo GTX 951, Customer came in asking for a tune up as he says the ski falls flat on its butt, I pulled the seat and it had about 3 inches of 2 cycle oil in the hull, Customer said he thought maybe the tank was leaking and he just kept it full of oil (so he claims). The tank is fine, This fitting came off of the oil injection pump, I bet the pump is still good, just how do I affix the fitting back to the housing? Anyone had this issue before?
Also, what is the opinion on the rod and main bearings being bad because of oil starvation? I do not know how long they ran it this way.
Lastly, where do you all get parts for these older skis, like pump cone rebuild kit, shaft, carb kits etc,,,,?

 

[gp1200x]

I would just clean the pump connections thoroughly and then JBWeld the fitting in using the gray expoy. That is not your main concern. I suspect a piston seized which is why it fell flat on its face. The engine may still turn over but some damage has been done. How much is hard to say. You can get parts on the Internet from SEADOO OEM parts searches, OSD marine etc.

Oil leaking so he just kept adding oil to the tank instead of finding the leak??? That may have cost him $$$$.

 

[Kleve]

I would just clean the pump connections thoroughly and then JBWeld the fitting in using the gray expoy. That is not your main concern. I suspect a piston seized which is why it fell flat on its face. The engine may still turn over but some damage has been done. How much is hard to say. You can get parts on the Internet from SEADOO OEM parts searches, OSD marine etc.

Oil leaking so he just kept adding oil to the tank instead of finding the leak??? That may have cost him $$$$.

That is what I told him , he wants me to do an upper but I don't think that is all it needs so I am going to fix what I can and see how it runs and go from there.

 

[burtshaver2021]

This reminds me of customers that want half of the roof shingled, hopefully the customer is a friend and fully understands the consequences of doing only a top end, I’ve never owned or worked on a 951 but everything I’ve ever read says not to do only a top end on these engines and this engine has suffered some type of loss so it especially should have a full rebuild. The customer is always right, I guess. Let us know how this all turns out, what caused the damage and how the customer decides to proceed.

 

[DI_Hoss]

I have two 2001 951 DI's, one lost the top end, so I replaced crank, had the sleeves bored & new pistons (total rebuild).

Rumors I've seen say the cranks can be good to 300 hours or so, as long as you rebuild the top end before the rings let go, you should be good. Others say toss the whole engine at 200 hours. Personally I'm going to try a top end on my older motor that still runs good with ~190 hours.

I would recommend a compression test, see where the top end is at.

As far as oil, I've got leaky tanks; will change next time I take a pipe out; until then I only fill them to half & carry a qt with me.

Best of luck.

 

[gp1200x]

I have the XPL style hull on both my Seadoos...pulling the oil tank out to change that bottom fitting and possibly hose is probably an hour 1/2-1 hour max on my skis even if I run into problems. Your hulls may be more difficult to work on but I would fix any oil leak before riding.

Rebuilding that entire engine is not that cheap so it depends on what the owner wants to put into an older ski and the condition it's in. I would probably pull the heads to check the bores at a minimum and turn the engine over by hand for a while to see if I can feel any issues or hear anything. I have over 250+ hours on an 800 and 200+ on a 951 that was rebuilt and both are still running strong....but I do maintenance on them and it sounds like this owner does not take great care of his ski.

Ask the owner what he means by falling flat on its butt. Did it suddently just die completely (piston seizing) and then he had to wait a little while before it would turn over and restart? If so ask him how many times he it did this before he finally took it out of the water and brough it in. Once or twice he may get lucky .....if he says a bunch of times I would definitely be worried about bottom end damage. Others may have a different opinion.

 

[Kleve]

I have two 2001 951 DI's, one lost the top end, so I replaced crank, had the sleeves bored & new pistons (total rebuild).

Rumors I've seen say the cranks can be good to 300 hours or so, as long as you rebuild the top end before the rings let go, you should be good. Others say toss the whole engine at 200 hours. Personally I'm going to try a top end on my older motor that still runs good with ~190 hours.

I would recommend a compression test, see where the top end is at.

As far as oil, I've got leaky tanks; will change next time I take a pipe out; until then I only fill them to half & carry a qt with me.

Best of luck.

Compression on both cylinders is only 90 PSI, not good so he did ask for a top end rebuild, only reason why I don't think we should just do the top is because of the oil leak before the injection pump. It was getting some oil I think, but was it getting enough, is there bearing damage is what I do not know. The engine never did seize up, he said it just didn't go very well (The pump had no oil, wear ring was 70% destroyed so that is some of the problem)

If I do a top end only, do I just change the piston and rings? I do not have access to a machine shop to boar the cylinders out (I work out of my garage to do simple oil changes and maintenance, what I have found out is no one here works on 2 strokes and most of what they bring to me is needing more than just simple maintenance.

 

[burtshaver2021]

The fact that they are both at 90 psi and not completely different of each other is a good sign, you wouldn’t happen to be using a compression tester from harbour Freight? I would at a minimum measure the bores to see if they are out of spec or not, and if they are how badly. You should be able to pick up a mitutoyo caliper and Fowler dial bore guage in the neighbour hood of 400.00 and if your running a shop even out of your home you will use these tools over and over again. If the customer declines the cost of measuring them up I would explain that your guaranteeing any amount of compression after the rebuild.

 

[Kleve]

I can't tell a lie, I did use a harbor freight gauge, I take it that is a huge mistake?

 

[burtshaver2021]

I can't tell a lie, I did use a harbor freight gauge, I take it that is a huge mistake?

They are notorious for reading 90 psi max. You may not be doing a top end rebuild after all,

 

[Grim]

Go and rent one for free at an autoparts store!