RXT with water on oil

[edgardha]

Hello,

first of all, I will introduce myself. My name is Edgard and I'm from Spain, hence sorry for my english but it isn't so good. I have read you since 3 years ago and I solved a lot of problems of my old pwc (gsx limited) thanks your. Now I have a new PWC (RXT 2005) that when I bougth it, I know that doesn't run properly. Old owner told me that the oil mix with water.

When I arrived at home with the new PWC, I checked the oil and it was too milky. Also, I checked the exhaust valves references and it was the bad reference (72XXXX....). So I decided remove the engine and rebuild all.

I check the oil cooler and it was a leak. But I don't know if is possible that the oil was too milky by the oil cooler or it could be another leak from oil/water. Also, I think that old owner turn over and he doesn't flush oil properly.
This is part of oil that I removed from the engine


What do you think about this? Is possible that this milky oil come from the water mixed on the oil cooler? As a comment, when I removed the oil cooler there was a clean oil on the side of water (transparent oil, no milky). I will replace the oil cooler and put a new head gasket, but do you think that there are another gasket/seal that can mix water in the oil? Oil pump seal for example?

I will inform you if I find something new.

I attach more photos.






Regards!

 

[funsummerahead]

More than likely the head gasket was leaking a little.

 

[mikidymac]

Actually if you found an issue with the oil cooler that would be it. It's a direct path from the water to the oil.

 

[edgardha]

Thanks booth for the reply. I'm sure that oil cooler is failed, but is it possible that lake this amount of water to take the oil this color? And as I understand/have readed, oil have more pressure, so it would be oil on water (also there are oil on the water tank) and not water on oil or it can be both?

Regards!

 

[mikidymac]

It doesn't take a lot of water to contaminate the oil.

I would look for obvious signs of a leak then when you get it back together you can pressurise the cooling system to check for leaks.

 

[edgardha]

Thanks a lot! I will check for that when the engine will be mounted