99 GSX with excessive oil in cylinders...why?

[TonyOde]

Last summer, ski ran fine all summer. Then it sat on lift for about a month. When I went to take it out of water for winter, engine would not turn over. I discovered the cylinders were loaded with oil. Looks as though the entire oil reservoir leaked into engine. Probably was at least half full.
I have read were seals can go bad. But this seemed to happen without any sign seals were going bad.
The lift I have in the water, does tilt the nose much higher in the air. So the jetski is not level at all. Could this cause the oil to do that?
Can I blow out the oil from the cylinders and then run the ski or would this cause further damage? Is there an easy way without making a complete mess with oil blowing out all over while cranking engine?
I know to change seals, the entire engine needs to come apart. Any easy way around this ?
Any help would be greatly appreciated.

Thanks!

 

[Strizzo]

951 or 787 RFI?

 

[warriorde52]

I imagine someone else will chime in if I'm giving horrible advice.

What I would is just take the plugs out and turn the starter to clear the cylinders. The oils won't hurt anything, it's the non compressible fluid that will raise the compression and possibly crack a head or piston.

It seems rather strange why this would occur. In scratching my head at this as well.

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[TonyOde]

I believe its the 787. But not positive to be honest. I am not around the ski as its at my summer place. As I said, its the GSX model.

 

[Strizzo]

I believe its the 787. But not positive to be honest. I am not around the ski as its at my summer place. As I said, its the GSX model.

yeah it makes sense that it would be a 787, just making sure.

if it filled in a month, it may be time for a rebuild to fix the crank seals. to get it through this season you could put a valve in the feed line and shut it off when you park it for a while. just be sure to open it up before you ride again.

whoever needs to use it can pull the plugs and crank it with the throttle open to pump the oil out of the crankcase, and get it running to clear the rest out. be aware, it will go everywhere.

i have a feeling it was probably smoking a lot at idle before it has now started to leak into the cylinders while stored.

 

[warriorde52]

yeah it makes sense that it would be a 787, just making sure.

if it filled in a month, it may be time for a rebuild to fix the crank seals. to get it through this season you could put a valve in the feed line and shut it off when you park it for a while. just be sure to open it up before you ride again.

whoever needs to use it can pull the plugs and crank it with the throttle open to pump the oil out of the crankcase, and get it running to clear the rest out. be aware, it will go everywhere.

i have a feeling it was probably smoking a lot at idle before it has now started to leak into the cylinders while stored.

Not trying to come off as an a**, but how would bad crank seals cause this?



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[DeejaysGTI]

Not trying to come off as an a**, but how would bad crank seals cause this?



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Had the same issue with my 96 GTX with the 787. Oil seeps past the crank into the cylinders.

 

[Coastiejoe]

Oil seeps past the seal and into the crankcase. Once you turn it over the oil get sucked into the cylinder via the intake stroke. Very common issue.

Put a shutoff valve on the oil feed line. Turn it off when not in use

For now, pump the oil out of the plug holes and install new spark plugs.


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[warriorde52]

Ahh, I see the light now. I was originally wondering how it would get in the upper half, now this makes sense.

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[TonyOde]

Thanks for all the input. Pretty much what I thought myself.

Last question, can anyone give me a good way to pump out the oil from cylinders? It sprays all over, huge mess. I have tried rags over the plug holes...but those don't last long. Anyone have any good ways they have done this with least amount of mess?

 

[warriorde52]

In the past I have used a shop vac with a pvc hose attached.

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[warriorde52]

If you don't have a vac handy, take a piece of hose stick it in the plug holes and put your finger over the top like a straw.

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[Strizzo]

Find a couple cheap old compression testers and run the hoses into a container?