weep hole

6 replies to this topic
  • rsumney

Posted November 02, 2009 - 06:54 AM


my 06 450f has a weep hole on the side cylinder. does this need any special attention when washing the bike, like plugging it so no water goes inside?

  • Aka.Goose

Posted November 02, 2009 - 10:33 AM


I keep it simple and just pop a q-tip in the hole before washing and try to avoid spraying directly at it...I don't think that is even really all that necessary as I always ride the bike for a few minutes right after washing anyway, to evaporate water that's hard to get to...

  • mxvet37

Posted November 02, 2009 - 02:39 PM


I cover mine with a little piece of duct tape, just in case...

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • dustin63933

Posted November 02, 2009 - 07:56 PM


Well it is there to drain water. I would like to think water going in there couldn't be so high pressured to hurt the metal casing of a spark plug or the weep hole's wall.

  • grayracer513

Posted November 02, 2009 - 08:26 PM


Well it is there to drain water.

It's actual purpose is to drain away oil that might come from a leaking cam cover gasket, or fuel "smooge" that would be forced past a leaking spark plug. Draining water is an entirely secondary function. I personally don't concern myself with whether water gets in it or not, but there's certainly no harm in plugging it while washing.

  • KJ790

Posted November 02, 2009 - 08:49 PM


If you want to plug it, a golf tee works great. Personally, I don't bother to.

  • rsumney

Posted November 03, 2009 - 12:57 PM


Thanks for the info guys!

Related Content

WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info

  • 0 replies

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

Is it worth it? (Cam and High compression piston) by macgi77

Dirt Bike   Make / Model Specific   Honda   CRF 150/230 F/L
  • Hot  36 replies

Is the 2016 GYTR Yamaha YZ450F too fast? by Fryboy

Dirt Bike   Special Interest Forums   Pro Racing
  • * - - - -
  • Hot  241 replies

Thinking about Yamaha 250... by Arctic Pride

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies

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.