yz 250x - excessive powervalve vent blowby

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dirt rat

dirt rat

Race Dog
Joined
Oct 6, 2012
Messages
1,191
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364
Bike
BMW G650 X-challenge
My 2022 yz250x with 27 hours is producing a huge amount of blowby oil from the powervalve breather.
How much is normal and what could cause it to become excessive ?
The bike starts and runs well.
 
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