ZR2

Member
Jun 24, 2003
38
0
I just got done burning up the gas in the carb. I have a 05 Yamaha YZ125 and the temperature is really cold, I think in the 20s right now maybe well... it started draining out coolant and black oil as I was starting it up... black oil at first and then the coolant came, quite a bit too.. about 3 days before this tho the bike dropped over cuz the kickstand was messed up... I don't think that has anything to do with it... the black oil came from one overflow tube and the coolant from the overflow coolant tube... the black oil tube is right next to the overflow tube... im not too good with mechanics so bear with me.
 

Studboy

Thinks he can ride
Dec 2, 2001
1,818
0
OK...so my guess is that the black oil is coming from the powervalve vent tube (the one that is coming out of the cylinder) which would be normal, and that the coolant was coming out of the overflow tube because you overheated the bike sitting there and running it stationary for too long.
 
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