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Oil in air filter

Tiny
CASO
  • MEMBER
  • 1989 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 187,000 MILES
Hello, I have a 1989 jeep cherokee with a 4.0 that leaks oil out of the valve cover into the air box and at idle knocks some. What could this be? Thanks Caso
Sunday, April 17th, 2011 AT 9:15 PM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Sounds like a worn out engine. The oil is from compression blowby and the knocking could be anything but usually serious.
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Sunday, April 17th, 2011 AT 9:35 PM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
EVEN WITH THE BLOWBY, THE PCV SYSTEM MAY NOT BE WORKING CORRECTLY/ OR NOT EVEN HOOKED UP.

CHECK IT OUT, IF YOU NEED HELP, LET US KNOW!

THE MEDIC
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Sunday, April 17th, 2011 AT 10:51 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
The PCV isn't causing the engine to knock.
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Sunday, April 17th, 2011 AT 10:53 PM

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