Toggle ThumperTalk Messages

Enter to DAILY to win MXGP2!

MXGP 2 is now available on the PC, Xbox One and PS4. In celebration of the game's release, Racing Game Central is giving away digital copies for the Xbox One, PS4 and PC. CLICK HERE TO ENTER




What is this hole in my cylinder?


2 replies to this topic
  • Fliip

Posted May 04, 2012 - 04:59 PM

#1

Something is coming out of this hole... It looks like oil. I need you guys' help!
Posted Image

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted May 04, 2012 - 05:39 PM

#2

That is the drain hole for the spark plug well. If it's leaking oil, either you plug is loose, or the cam cover gasket is leaking into the plug well.

  • stroker101

Posted May 05, 2012 - 07:33 PM

#3

gotta be the 2nd answer

also the hole can be / is used to blow compressed air through to clean the plug area of dirt before removing the plug. ( remove the spark plug cap first)





Related Content

Forums
Photo

YZ426f vs YZ250 race by dirtpaw12


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  45 replies
Reviews

Yamaha YZ450F 2016 by kk21


Yamaha YZ450F 2016
  • 9 reviews
  • Last review by mxcolt45
  • On June 16, 2016
Forums
Photo

2011 YZ450F Hot Start Problems by brandonkranich


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  26 replies
Forums
Photo

yz400f throttle bog by yz400fmaniac


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

Carb conversion by yz400fproject


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply
 
x

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.