fuel leaking when bike is shut off

10 replies to this topic
  • sean9

Posted December 17, 2011 - 02:30 PM


my freind has a 2000wr400 and when his bike is shut off it leaks fuel what could be the problem.he has changed gaskets in the pepcock.

  • RasmusDK

Posted December 17, 2011 - 03:35 PM


then it leaking from the petcock?

  • sean9

Posted December 17, 2011 - 04:39 PM


thats what i thought but no it wasnt leaking

  • MANIAC998

Posted December 17, 2011 - 05:32 PM


Ahhh......yeah. I think we need more information. Such as, just where is it leaking from? With this information, we might be able to help. Maniac

  • sean9

Posted December 17, 2011 - 07:42 PM


sorry it is leaking from the overflow

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

Posted December 17, 2011 - 07:49 PM


I'd inspect needle and seat, needle may be stuck

  • MANIAC998

Posted December 18, 2011 - 04:19 AM


Like newbernbears said, I'd check the needle & seat first, and then check the float height too. Make sure it's in spec. You do have a manual, right? Maniac

  • miweber929

Posted December 18, 2011 - 05:25 AM


Or you could simply turn the petcock off when you are not riding. Amazing how many people don't do this one simple thing. If it still leaks you have a petcock anno it a carb problem like was mentioned; if not go for needle and seat and check the float height.


Edited by miweber929, December 19, 2011 - 05:59 AM.

  • 2grimjim

Posted December 18, 2011 - 11:16 AM


The float level may not be correctly adjusted. If you go the the trouble of removing the carb to clean it, you should make sure the float level is set @8mm too.

  • sean9

Posted December 18, 2011 - 04:48 PM


thank you everyone i will look at everything on the carb.and report back

  • Pooley

Posted December 19, 2011 - 12:43 PM


The o-ring that goes around the outside of the seat. They harden up over time and does exactly what you describe.


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.