post #1 of Old 04-25-2013, 05:58 PM Thread Starter
Registered User
Join Date: Apr 2013
Posts: 23
Why would there be oil in my air intake

I just got a 1991 jeep wrangler renegade i checked the air intake and there was oil on the filter and in the bottom of the box there was also oil coming out of the top of the motor were a tube goes from the ar intake to the top on the valve cover

Attached Thumbnails
image-2116734916.jpg   image-1035178405.jpg  
offroadnick is offline  
post #2 of Old 04-25-2013, 06:26 PM
Registered User
1995 YJ Wrangler 
Join Date: Nov 2009
Location: Schenectady
Posts: 1,182
that's called "blow-by"
it seems to be common with the Jeep motors... and yours doesn't look too bad really.

that said, the only thing I'm aware of to get rid of (or at least minimize) the problem is to clean (or possibly replace) the pcv and the baffles under the valve cover

Sean B. - Schenectady, NY - 95 YJ, 350/700r4/NP241, JB Shorty SYE, 8.8 rear, 2" BDS, 1" homebrew shackles, Daystar 1" BL, TJ flares, 35x12.50 General Grabber AT2 on 15x10 Bart D-Truckers, Polyshield polycarbonate windshield, HD over/under crossover steering
swap/build thread:
SeanB95YJ is offline  
post #3 of Old 04-25-2013, 08:24 PM
Registered User
1988 YJ Wrangler 
Join Date: Apr 2007
Location: Rio Rancho NM
Posts: 4,298
I agree clean out the PCV/CCV system including removing the valve cover and cleaning out the baffles.
Ensure that all of the hoses are clear and not cracked/broken.
Beyond that would require having the cylinders honed and install new rings at a minimum, from what I can see that would be overkill.

4.7stroker is offline  

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome