Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Help- Oil leaking through AOS

86MLR · 10-10-2019, 10:06 PM

Could be a few things

The breather hoses are restrictive, are the hoses still OEM size? Are you feeding IN 2 hoses with only 1 OUTLET?

VTA or recirculating?

You may be having issues with your PCV, which PCV are you using?

Any restrictions in the venting system will pressurize you engine, this will blow oil up and out.

An issue with a PCV will have simular results under boost.

https://axleaddict.com/auto-repair/H...PCV-valve-test

Mine uses a WRX PCV

10-10-2019, 10:06 PM	#4
86MLR Senior Member Join Date: Aug 2018 Drives: 2002 VX Commodore SS LS1 Auto Location: Sydney Posts: 2,203 Thanks: 500 Thanked 2,185 Times in 1,111 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Could be a few things The breather hoses are restrictive, are the hoses still OEM size? Are you feeding IN 2 hoses with only 1 OUTLET? VTA or recirculating? You may be having issues with your PCV, which PCV are you using? Any restrictions in the venting system will pressurize you engine, this will blow oil up and out. An issue with a PCV will have simular results under boost. https://axleaddict.com/auto-repair/H...PCV-valve-test Mine uses a WRX PCV __________________ Disclaimer: This post represents the official views of the voices in my head at the time of posting. http://www.ft86club.com/forums/showthread.php?t=133311 I'm only here for the biscuits Last edited by 86MLR; 10-10-2019 at 10:16 PM.