www.86garage.com

First off I have an 85 corolla SR5. I have a problem with oil blow back and oil soaking my air filter. From what I can tell its coming in the second breather port on the valve cover and flowing through a hose into the air housing, thus now soaking my air filter. I am thinking of just solving this with an oil catch can but my question is has anyone else dealt with this problem before and are the 4ac's proned to high crankcase pressure? I have already replaced my pcv valve and still the same issue.

I think it might be time to rebuild that bad boy. If you're getting that much oil in the intake and you can swear up and down that the PCV system is not at fault, well my friend, those piston rings are fried.

Perform a compression test and check the static pressures of each and the balance too.