fuel leak after I went down


8 replies to this topic
  • bentru

Posted September 12, 2006 - 07:10 AM

#1

I was going up a pretty step hill on my 98 YZ400. Things went wrong and the bike ended up on it's side wheels facing up hill. Fuel was coming out pretty fast. I didn't get a chance to find out where I just got it up as fast as I could. I would like to know if this is normal or can this be fixed.

  • Sundog

Posted September 12, 2006 - 07:13 AM

#2

I was going up a pretty step hill on my 98 YZ400. Things went wrong and the bike ended up on it's side wheels facing up hill. Fuel was coming out pretty fast. I didn't get a chance to find out where I just got it up as fast as I could. I would like to know if this is normal or can this be fixed.


If the bike is on its side it will leak gas out of the overflo tube. Your bike is fine...now if gas is coming out when in the correct upright position (with the bike either on or off) you have a problem (e.g. float valve prob).

  • Daffy Duck

Posted September 12, 2006 - 08:10 AM

#3

If the bike is on its side it will leak gas out of the overflo tube. Your bike is fine...now if gas is coming out when in the correct upright position (with the bike either on or off) you have a problem (e.g. float valve prob).

Sounds right to me.. :thumbsup:

  • grayracer513

Posted September 12, 2006 - 08:20 AM

#4

Gravity. The float bowl has to be vented in order to function, so if the bike lays down or gets inverted, it leaks.

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

Posted September 12, 2006 - 08:30 AM

#5

Petrol's coming out of carb overflow pipes and possible the petrol tanks breather pipe if you dont have a one way valve.

Muz
:thumbsup:

  • bentru

Posted September 12, 2006 - 08:54 AM

#6

Well, I am glad nothing is broken. But on the other hand it is too bad it can't be fixed.

  • grayracer513

Posted September 12, 2006 - 09:09 AM

#7

One more reason to go to fuel injection.

  • YZ426F Rider

Posted September 12, 2006 - 09:28 AM

#8

When my son was learning to ride I think he lost more fuel through the vent/breather/overflow tubes than he burned in the engine. :applause: Kinda my fault though, I took him on trails that were far too difficult for a beginner...the upside to that is that he got pretty good really fast. :thumbsup:

  • Sundog

Posted September 12, 2006 - 03:23 PM

#9

Well, I am glad nothing is broken. But on the other hand it is too bad it can't be fixed.


There is nothing to fix. A gravity fed carb wasn't meant to run upside down or completely on it's side. :thumbsup:





Related Content

Reviews

Yamaha YZ450F 2017 by Chris.GVS


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

James Stewart back on a YZ450F by YamaLink


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies
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
Wiki
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info


Articles
  • 0 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.