I havnt really given my 89 lt250r a good look over till today, I bought it about 2 months ago and have ridden it a handful of times, i have noticed i lose A LOT of oil, and looked today to find out where, cause i took it for a ride 1/8 of a mile and the top of the motor was covered in oil. this is a pic of where it is, it is circled the vent it is leaking out of.. can someone please tell me what i have to do to fix it? It leaks when you rev it

Mark Link to pic

 

Looks like the banjo fitting going into the motor. You just need new copper washers that go with it.

 

Sorry, i dont see any banjo fitting on the motor... Its coming out the case vent tube... i'm soo lost..

MArk

 

Check to make sure the transmission is not overilled with lube. The spinning parts can really sling and churn oil around, and if its too full then its got no place to go but out that tube.

It should say on the side of the engine (most likely on the clutch cover, not sure on your model, it looks like an 85/86) the proper amount of oil to add to the transmission.

 

anyone know how much a 89 takes?

Mark

 

If the crank case is not over filled ( if I remember right it is 1000cc printed next to the kick starter) it may be just normal blow by. You need to have a house conected to it and twist tie it into the other drain tubes of the carb. It will leak a little from time to time if you **** it out a lot, however, you need to have a tube on it. Also make sure you do not pinch off the line when you tie it into the other carb lines, it will blow out your sproket seal..... trust me;-). You should not see an oil lose within about 10-12 hours. If you are, you need to do a compression test. You are going to have to refer to the owneers manual or call the dealer but I think it is supposed to be at least 125psi, from 6 good kicks, check on that number though.

ca

 

I think my problem is operator error, i think i was putting too much oil in... uhh ohhh...

thanks
Mark

 

Blow-by will not cause transmission oil to be spit out on a 2-stroke motor. The crank and the transmission are separate and sealed from each other (unlike a 4-stroke). If your oil level is fine then the most likely problem is the exhaust valve seals. Bad exhaust valve seals allow the exhaust gasses to pressurize the transmission and blow oil out the vent tube (especially at wot). A compression test will not find this problem but a leak down test will.

Another thing that may create a pressurized trans area is a leaky right side main seal. However, a loose main seal would also cause a lean condition and overall poor performance whereas a leaky valve seal will not noticeably harm performance or reliability.