Maintenance & Technical > KX250 / KX125

One way Valve on Crankcase Breather?

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The Flyin Hawaiian:
I have my vents routed down like the factory had them, otherwise it wont vent/drain properly. That black goo will end up collecting in the cover.

Narkotik666:
yeah, i thought that there wont be enough pressure to blow the goo out...when i had the hose pointed straight UP.....but low and behold....i had a dirty boot/ dirty pant / dirty radiator and a dirty motor....so its blows with some force, I am sure...that i would get it to go OVER the motor, and out the back.....which i point down, so the last bit of the "draining" action....gravity could help out.

Attached is a image / diagram of the extension and the tip where it "spits"....right over the chain.

i attached the "stock" hose with the L bend to the frame.....the L pointing Back....and added the white hose from the POWERVALVE to the top of the Stock hose.

and whenever i end the ride....i close the petcock....and burn the last bit of fuel in the carb....so maybe...that would also blow out the last bit of goo in the pipe....or i can just remove the white hose from the powervalve it self....and blow it clean like that?

jonny500:
sorry i have been away for a few days. right as the other guys say it is your pv vent. as it is blowing and sucking i would say that some of the seals are not working. i can not think of any damage that would result from runing it in this state as long as the water is kept out (PLEASE CORRECT ME, ANYONE). i would say the best thing to do is wait until your next top end over haul and replace anything then. i have included a diagram of a 99 250 barrel not the same as yours but you can get an idea of what needs to be done.
regards john

Narkotik666:
Cool thing is....i have a 2 year Factory Warranty on my bike.....and i plan to rebuild it twice before it runs out :P
i mean....MAKE them rebuild it....then, i'll make sure EVERYTHINGS covered.

and i know, i AM dubious about dealer/stealer warranties.....but, i have to say, these guys are pretty good, they even replace the fork seals when they start weeping.....only place in SA that has a warranty like that....so, i am sure they will cover everything needed.....

paid top dollar for it.....and well, after the "HUSABERG INCIDENT" i will never ever buy a 2nd hand bike without a warranty. (AND NEEEEEEEVER EVER buy a 4Stroke...okay maybe a KLX450)

thanks for the heads up Jonny.....i will make sure to be critical when they do it.

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