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Unread 09-02-2012, 01:00 PM   #1
cf7710
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1994 YJ Wrangler 
 
Join Date: Sep 2009
Location: Lebanon,Ohio
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oil in the air box

My buddy just brought over his 95 YJ, when he pulled up I noticed oil dripping out. We opened the hood and found it coming out around the air filter box. When we started it up the pressure guage buried above 80. Im kind of stumped . Any body have an Idea of where to start. Thanks in advance for the help.

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Unread 09-02-2012, 01:15 PM   #2
cf7710
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Nevermind I think I found a fix. Sorry for wasting your time if you clicked on this, but not sure I can delete threads.
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Unread 09-02-2012, 01:38 PM   #3
Jeepsr4me
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Well since you did post, why not say what you found. I am just on pins and needles waiting to hear.........
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Unread 09-02-2012, 11:03 PM   #4
zomblake
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1995 YJ Wrangler 
 
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Location: Clearwater, FL
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I'm interested in your fix also. I had a little bit of oil on my air filter too. Also a 95. I noticed after an engine backfire and chalked it up to that, but still interested in the answer.
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Unread 09-03-2012, 06:59 AM   #5
Apollo12227
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1992 YJ Wrangler 
 
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Cleaning the hoses and the valve ontop of the valve cover (PCV or CCV can't remember which one YJs have). The one closest to the firewall needs to be cleaned with brake cleaner and a paperclip as it gets clogged and causes the crank case pressure to exit out the airbox tube.

This fixed the oil in the airbox problem for me anyway and many people I know. If the problem persists after cleaning the vents then you have a worn motor with severe blowby. Some people make a threaded catch can to run the vents into instead of the airbox. Oil collects in the can instead of your air filter. It would take forever to fill up the can but it doesn't take much to gum up an air filter.
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