oil dripping from breather tube


5 replies to this topic
  • 2001YZF426Rider

Posted July 30, 2008 - 07:15 PM

#1

My 426 drips oil out and leaves a small puddle about the size of a half dollar almost every time i shut it down after riding it. It is only ridden on the street now. Could it be because of the higher speeds? Does this indicate anything? I plan on re-routing it into a bottle in the airbox.

  • grayracer513

Posted July 30, 2008 - 07:29 PM

#2

Does this indicate anything?

.No..

  • Justin89

Posted July 30, 2008 - 08:43 PM

#3

Thats normal...even if you see a little white spludge dripping out, that's normal too:thumbsup:

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • 2001YZF426Rider

Posted July 31, 2008 - 07:27 PM

#4

Well looking at it today, its more then the size of a half dollar. Its probably 2-3'' diameter.

  • grayracer513

Posted July 31, 2008 - 08:15 PM

#5

That may be a little more than normal. Excess breather oil comes from;

> Overfilling. Harder to accomplish with a 426 than other bikes.

> Riding very hard. High RPM's and heavy throttle loads will carry more oil into the crankcase vent.

> Tired engine. Worn rings leak combustion gasses into the crankcase, vaporizing more oil, and increasing the net outflow through the vent, carrying oil with it.

  • 2001YZF426Rider

Posted August 02, 2008 - 07:58 PM

#6

Well i would have to say the RPMs are usually high from riding it on the street. and i have had it for 4 years now and havent re ringed it so.. Maybe putting new rings on it would be a good idea





Related Content

Forums
Photo

YZ450F 03 Sparks driving me crazy by SirAttard


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

100 hrs on 2014 yz450f, shim valves or replace them? by ttr230rider6


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  79 replies
Reviews

Yamaha YZ450F 2017 by Chris.GVS


Yamaha YZ450F 2017
  • - - - - -
  • 0 reviews
Forums
Photo
Motocross

Thinking about Yamaha 250... by Arctic Pride


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies
Forums
Photo

2016 YZ450 by CaptainKnobby


Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies
 
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.