2 stroke problem

3 replies to this topic
  • yamahazinger

Posted January 17, 2005 - 11:19 AM


I have an 02 yz250 2 stroke. I recently started up my bike up after about a month or so of sitting and had it running around the yard for a couple laps then put it away. I noticed the powervalve breather on the left side was dripping out a grey oil. It usually drips black. I heard of it happening ot other guys, but dont remember what they said it was. The triangle stand goes on the left side and the bike leans that way and maybe the grey oil came from the powervalve or something. If anyone knows anything id appreciate it. thanks dave :cry:

02 yz250
98 yz125
01 xr 80r
83 yt 175 tri moto

  • yzwiley

Posted January 17, 2005 - 12:14 PM


My 250s do the same thing and always have. I've always believe its just a little moisture mixed in with the oil. I've never had issues with a motor.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • ChR1s

Posted January 17, 2005 - 12:17 PM


Yep, same thing with my o2 YZ250. Condensation + oil = grey goop.

  • yamahazinger

Posted January 17, 2005 - 12:27 PM


thanks i was just wondering what it was. Now on my last ride around the yard the shock seal gave out. great. Gotts go fix that now. lol

Related Content


YZ450F 03 Sparks driving me crazy by SirAttard

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies

Is the 2016 GYTR Yamaha YZ450F too fast? by Fryboy

Dirt Bike   Special Interest Forums   Pro Racing
  • * - - - -
  • Hot  241 replies

Need help by Goforaride

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  68 replies

yz400f throttle bog by yz400fmaniac

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • * * * * *
  • Hot  28 replies

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.