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Intake draws oil into air filter but runs good anyway.

(1990 Jeep Cherokee)
on January 18, 2018
I put new air filter in and a week later the back side is saturated with oil from the tubes.
How long have you had this problem? 2000 miles
Tags: jeep, cherokee
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Popular Answer
on January 19, 2018
1990 - probably has several miles on the vehicle - suspect worn piston rings / cylinder walls resulting in *blow-by* ...

Google > blow-by for more detailed information.
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on January 19, 2018

Also make sure the PCV valve system is functional.
on January 19, 2018
Auto zone parts store tells me there is no PCV valve on this unit. A 90 cherokee 4.0 6.
on January 19, 2018
Yep - them **auto repair technicians** they got at AutoZone are really smart for sure!

Hope you get it figured out.


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