carburetor leaking intermittently


2 replies to this topic
  • yz450scott

Posted June 17, 2010 - 05:28 AM

#1

Help! I completely cleaned my carb, removed all the jets, cleaned them with carb cleaner and blew everything out with air. Now that I reinstalled everything, my carb overflow leaking intermittently. Every minute or so, about 10 drips come out the overflow fast. I removed the carb and checked the float height and verified it was at specs. 8mm..It did it again, so I reset the float at 10mm which I think is the right direction to now allow as much gas in the float bowl. It still does it...What am I doing wrong? Is there possible some other cause? I took out the needle valve and assembly that it goes into and it is clean and the tip of the needle looks new...I am stumped...Any help would be appreciated...:thumbsup:

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

Posted June 17, 2010 - 06:20 AM

#2

How does your float valve look? Is it moving smoothly (remove the float bowl, look from the side and move the float up and down)?

  • grayracer513

Posted June 17, 2010 - 08:00 AM

#3

It appears the float needle isn't sealing, which is either due to dirt embedded on the tip (may not be visible) or a wear or dry-out condition.





Related Content

Forums
Photo

First Hare scramble tips by dhend8


Dirt Bike   General Dirt Bike Forums   General Dirt Bike Discussion
  • Hot  33 replies
Forums
Photo
Motocross

Thinking about Yamaha 250... by Arctic Pride


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

YZ450F 03 Sparks driving me crazy by SirAttard


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies
Wiki
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info


Articles
  • 0 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.