HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
Dougie

Head tube - white crud

10 posts in this topic

I believe the tube you are talking about is the breather hose. That is if I am reading you right. Your talking about the top of the engine right?

It is normal for oil to leak out of that tube after a ride. Not much though. As for white crud leaking out of it, I have no idea. Unless you submerged your bike under water lately and your oil turned milky white because water got in there.

Share this post


Link to post
Share on other sites

It's normal for a few drops of oil to drip out of the head breather/vent tube. The whitish color might be due to frothing. Mine comes out as regular amber colored oil. With your engine idling, put your hand near the end of the tube and you can feel the crankcase venting in pulses. The oil coming out a little is because of the oil mist in the pulses. It builds up slowly over time and a drop will come out here and there. The only thing to be alarmed about would be if you drained your oil after running the engine for several minutes and the oil is milky white. That would be a sign that coolant is getting into your oil...usually a blown head gasket. Not good!

Share this post


Link to post
Share on other sites

If it's cold where you are it is very normal to see a white colored oily residue coming out of the vent hose. When you are running the engine , and letting it get cold ,you build up moisture in the cases, especially in the valve cover area. I wouldn't worry about it, unless you pull your dipstick and find it milky looking too.

Share this post


Link to post
Share on other sites

Wr426,after the 1st ride i found some white crud/oil? leaking out of one of the tubes. I traced the tube back up the bike and it was leaking out of the large tube that mounts directly on top of the head. Is this normal? what do you think this crud was and what is that tube for?

------------------

WR426 Power!

Share this post


Link to post
Share on other sites

I noticed the same thing the other day, that milky white solution.

I haven't heard about the condensation build up in the case, but it makes sense.

I've always thought that it was due to riding in deep watery conditions. The breather tube you are talking about has positve and negative pressure constantly acting in it. Thus some water will get sucked up and pushed back out. This tube is coated throughout with overflow oil from the case and when the water and oil mix it makes this milky white fluid. What you are seeing is that mixture making its way out. The hose is designed to be long enough not to suck water into the case, but just to be sure check the oil at the filler if its normal you are ok, if its white you've sucked water, change it soon...

------------------

JJ - 99 WR; WR timed, stock jetting, Scotts stabalizer, Scotts triple clamps, Pro-Tapers, Terry Cable Hot start, MSR Raptor clutch lever , Moose skid plate , Works frame guards, Acerbis Pro Rally guards, Renthal MD-soft grips, Russel speed bleeders, Factory Effect graphics, YZ rear fender

Share this post


Link to post
Share on other sites

This may sound silly, (because it is) but it could be some of that white plastic that Buck had in his cylinder head cover.

Now, was that worth two cents?

Share this post


Link to post
Share on other sites

nothing to do with white plastic bits making oil frothy white!

if you wash yer bike wter will find a way up & when it gets pushed back down it's frothy & white.

we've had several boys over here in britian stall in water & the engine sucked water up wrecking the engine.

Taffy

Share this post


Link to post
Share on other sites

I had some of that milky white froth drip out of my vent tube today right after I loaded the bike into my truck. Just another eccentricity of this machine....kinda like a woman.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0