oil coming out of brethers

[key]

I installed a mini breather my yfz's crankcase breather and top of valve cover. Both are blowing out oil. Is this normal?

[intruder]

No sounds like you have blow-by and need new rings.

[tido450]

Actually it is normal. The reason for the little black box next to the radiator reservoir is to prevent this from happening. Your best bet to prevent this is to keep it installed. But if you insist on keeping it eliminated you can install longer hoses and loop them up over the frame, it still may leak but less. The breathers on the dirtbikes shoot out some oil as well. If you choose to do nothing just monitor your oil levels religiously.