oil in air filter
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Newbie
Joined: Feb 2010
Posts: 5
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Model: Cherokee
oil in air filter
What causes the oil to come through the air tube on the top of the valve cover. towards the front. I have an 84 xj that has grown up to a 91 4.0 high output. I got oil going through the air cleaner and being sucked in the throttle body. its not a lot but there is some.
Seasoned Member
Joined: Dec 2009
Posts: 429
Likes: 0
From: Wichita, KS
Year: 1999
Model: Cherokee
Engine: 4.0l I6
I have the same issue. I replaced the CCV Valve (Small vaccum line that is in the rear of the valve cover). This fixes this issue most of the time. But it didnt on mine. I am just letting you know your options.
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