WHAT is this white goo in my valve cover. - JeepForum.com
LinkBack Thread Tools
post #1 of 5 Old 11-18-2013, 08:20 PM Thread Starter
Registered User
2010 JK Wrangler 
Join Date: Oct 2009
Location: Ohio
Posts: 10
WHAT is this white goo in my valve cover.

WHAT is this WHITE GOO, in my valve cover????? I have a 89' Wrangler w/4.2, and I noticed in my oil filler cap there is this whitish, tannish Goo. I haven't taken the valve cover off yet. It appears to be hanging in the top inside of the valve cover, there is none of this guk in my oil pan or radiator. It sorta looks like dirty crisco.the motor was rebuilt about 2,000 miles ago or fewer. The oil has been changed. I have never seen anything quite like this. I can not tear into it till the weekend. I have noticed I have brownish dirty spot that it blows onto the driveway on startup. This has not seemed to do this once it is started but, I really have not looked once I park & turn it off. It is sorta rusty looking brown. My gas mileage has sucked, well .... You know worse than it should. This jeep pretty much has been gone over & yet when I think I'm good, something else happens.... Yeah, right It's aJeep Thing. If anyone can give me any advice or tell me how to fix it, or where to look to figure out what this is??? All help is greatly appreciated. I am including a couple pictures if it.

Attached Images
Jeepsterdoug is offline  
Sponsored Links
post #2 of 5 Old 11-18-2013, 08:21 PM
Mean Max
Don't poke the bear
Mean Max's Avatar
1991 YJ Wrangler 
Join Date: Jul 2007
Location: Stuart, Florida
Posts: 13,734


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Originally Posted by UltimatE View Post
Max has a picture of every Jeep part ever made.
Originally Posted by Benderff View Post
No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
Mean Max is offline  
post #3 of 5 Old 11-18-2013, 08:29 PM
Web Wheeler
bpounds's Avatar
1988 YJ Wrangler 
Join Date: Jun 2013
Location: Whittier
Posts: 2,008
Yeah, water or coolant. Never a good thing. Most often it means a head gasket has blown. But I have owned a truck that would do that from condensation and it would burn off after a long run. If you're lucky it is left over coolant after the rebuild. I hope so, but I doubt it.

Dodge did not build my Jeep.
1988 Wrangler,4.2L I-6, Howell EFI JP-1,CRT HEI Ign,AX15 ext slave conversion, Zone 2.5" lift + 1/2" booms, BFG 31 x 10.5, Bestop.
bpounds is online now  
post #4 of 5 Old 11-18-2013, 08:33 PM
Registered User
1988 YJ Wrangler 
Join Date: Jun 2011
Location: lubbock
Posts: 579
Same thing on mine after I rebuilt my 4.0. Pulled valve cover off and double checked everything. Cleaned it up and changed the oil. No problems at all after that. Could be some condensation build up that mixed with the oil or prelube from the build.

My Jeep build. :)

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


rykemc is offline  
post #5 of 5 Old 11-18-2013, 09:39 PM
Web Wheeler
Chrisnvegas's Avatar
1992 YJ Wrangler 
Join Date: Dec 2012
Location: The Desert
Posts: 6,309
Perhaps you have a case of short-trip-itis. It's a common malady cause by excessive short trips to the liquor store without reaching proper operating temperature resulting in a buildup of condensation in the oil and exhaust.
My recommendations? take that beeoch out on the highway once on a while and heat her up. Anything less than 5 to 7 miles is considered a short trip. Especially in cold humid climates.

Or, you have a bad head gasket.

"Auto racing began 5 minutes after the second car was built."
Henry Ford
Chrisnvegas is offline  

issues , problems , technical

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

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 post new threads
You may 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