air puffing out of vent line



1 reply to this topic
  • zimmermangm

Posted June 10, 2000 - 07:32 PM

#1

I noticed my new WR puffs quite a bit of air out of the large vent line near the shifter pedal. A drop or two of oil is always present too. Is this normal or something I should be worried about? Where is this air coming from?

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  • Matt_Porritt

Posted June 10, 2000 - 08:24 PM

#2

This is the crancase breaker.
Everytime the piston comes it will try to displace 400cc of fumes/vapour etc from inside the crankcase.
There will also be some blowby that ends up in the crankcase..

Its completly normal!
You'll also only lose 1-2 drops of oil..

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**Ride it like you Stole it!**
Matt Porritt
99 YZ400F
Rubber Chicken Racing




 
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