yz 250 gear box oil!!!!

[Bigdogdaddy69]

well Today i went for a little ride on the bike i came home washed the bike cleaned the air filter then i finished by changing the oil. And the oil seemed to be mixed with somthing white. Im guessing its antifreeze. What do i to fix this/ locate problem. Will this hurt my bike if i hold off on fixing it? The bike is running really good, shifts fine runs perfect.

 

[RM85rider123]

it's water

 

[Bigdogdaddy69]

well i figured it was water im just trying to find out where its coming from.

 

[jbesch]

Your fill plug might not have been tight when you where washing it

 

[AV8R]

water pump seal is leaking water into the oil.

 

[ysr89]

It's water. Flush the system with some Seafoam and a few quarts of the cheapest oil you can find. After flushing until white oil is gone, add good oil and go. Check it later on to see if it's white again, if it is, then you may have a bigger problem like a bad seal.

 

[CarnageZ28]

Could possibly have even been from condenstaion if the bike sat for a while? How bad was it?

And yes, running it like that can hurt bearings. Anti-freeze has like zero lubricating properties.

 

[YZ Teacher]

Every single time I have had milky oil it was the water pump seal. It is not a difficult fix as it takes about 1/2 an hour. Just make sure you work clean when making the repair.

 

[Bigdogdaddy69]

theres barely any white in there. I put fresh oil in today and im going to burn a tank full of gas and check my oil and let you know..

 

[CarnageZ28]

Ehhh, you better run it shorter than that. You dont want to have a seal let loose and fill your gear box with antifreeze. It will eat up your bearings. And possibly overheat your bike if you dont keep a close eye on the antifreeze. I would run it with cheap 10W40 for like 20 minutes, half hour, drain, and see what you have. Dont run it hard till you figure out what is wrong.

 

[Bigdogdaddy69]

my anifreeze level never goes down im going to drain my oil now and see what i get.

 

[Bigdogdaddy69]

ok i drained the oil which had one ride on it and its like milk.

 

[kx125412]

Yep, waterpump seal is done. They're not hard to replace at all and cost about 15-20 bucks plus gaskets.

 

[Reesknight]

What does your exhaust smell like? Or your spark plug? Could be a crankshaft seal if your not loosing any coolant.

 

[Bigdogdaddy69]

should i pull the plug?

 

[CarnageZ28]

Yea, pull it and take a look. It might be able to tell you something. Could be a crankcase seal, but I am leaning more towards waterpump ...

 

[Bigdogdaddy69]

k when i get home from school ill pop out the plug.

 

[Bigdogdaddy69]

i replaced the oil seal today but i have not had the chance to try it out yet.

 

[Bigdogdaddy69]

problem is fixed. Thanks for all your help.....