Have an oil leak/sludge and oil on inside of hood after road trip - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 06-15-2014, 09:55 PM   #1
Jeeper
 
Join Date: Sep 2013
Posts: 30
Have an oil leak/sludge and oil on inside of hood after road trip

97TJ 2.5L with 129k miles

Went on the highway yesterday for a good 2 hours each way on fairly steep highway at times that required a lot of constant shifting in order to climb (this is going up into the mountains in Utah). Never did this before but we got there.

When I was almost to our destination, we stopped to get gas and something to eat and I decided to pop the hood and look around as I've never driven the jeep this hard before. Right away I noticed a couple spots of what look to be oil spray on the hood; not a lot but it wasn't there before as well as oil coming out from around the oil fill plug. I also noticed that I had oil seeping out of the front of the valve cover (I'm guessing this is a failing valve cover gasket?)and had 'sludge' accumulating on the valve cover ledge on the drivers side (front of valve cover, drivers side where there is a bit of a lip there for some of the bolts).

Checked the oil and I was 1/2 quart low and since it was warm, I'm guessing it was probably a full quart. Put some 10w30 in it and drove on without any issues for the rest of the day and the way back.

I would assume that this was a valve gasket going bad, but I'm confused as to why I have the spots on the hood and why I had oil coming out of the oil fill plug at some point as well. Can this be the gasket and something else as well?

I checked the air filter/intake and there is no oil and I ran the Jeep in neutral for a while and put it up to 3200RPM with the oil fill cap off so I am guessing its not excessive blow by but what can this be?

I'd like this get this fixed so I'm not left worrying next time I'm on a highway trip.

Thanks

ETA - Also just did the duct tape test to where you put some duct tape over the oil fill hole and run the engine. Did it and put it to 3500RPM, tape didn't blow off or move.

TheGerman is offline   Quote Quick Reply
Old 06-15-2014, 10:23 PM   #2
Jeeper
 
tbensor's Avatar
 
Join Date: Feb 2012
Posts: 1,145
Quote:
Originally Posted by TheGerman View Post
97TJ 2.5L with 129k miles Went on the highway yesterday for a good 2 hours each way on fairly steep highway at times that required a lot of constant shifting in order to climb (this is going up into the mountains in Utah). Never did this before but we got there. When I was almost to our destination, we stopped to get gas and something to eat and I decided to pop the hood and look around as I've never driven the jeep this hard before. Right away I noticed a couple spots of what look to be oil spray on the hood; not a lot but it wasn't there before as well as oil coming out from around the oil fill plug. I also noticed that I had oil seeping out of the front of the valve cover (I'm guessing this is a failing valve cover gasket?)and had 'sludge' accumulating on the valve cover ledge on the drivers side (front of valve cover, drivers side where there is a bit of a lip there for some of the bolts). Checked the oil and I was 1/2 quart low and since it was warm, I'm guessing it was probably a full quart. Put some 10w30 in it and drove on without any issues for the rest of the day and the way back. I would assume that this was a valve gasket going bad, but I'm confused as to why I have the spots on the hood and why I had oil coming out of the oil fill plug at some point as well. Can this be the gasket and something else as well? I checked the air filter/intake and there is no oil and I ran the Jeep in neutral for a while and put it up to 3200RPM with the oil fill cap off so I am guessing its not excessive blow by but what can this be? I'd like this get this fixed so I'm not left worrying next time I'm on a highway trip. Thanks ETA - Also just did the duct tape test to where you put some duct tape over the oil fill hole and run the engine. Did it and put it to 3500RPM, tape didn't blow off or move.
oil usually does not spray. How is your power steering fluid?

__________________
My Toys
2003 RED Jeep Wrangler X - Can't stop adding stuff and updating.
2014 White Jeep Liberty Sport
2011 Carbon Black GMC Yukon Denali
2007 Black GMC Sierra 2500HD 4x4 Duramax/Allison
2007 Keystone Laredo 284BHS TT
tbensor is offline   Quote Quick Reply
Old 06-15-2014, 10:40 PM   #3
Jeeper
 
Join Date: Sep 2013
Posts: 30
Just looked and the power steering fluid seemed full.

Here are some pictures:

Notice the spray on the hood, leaking of oil out of the oil fill hole and the oil coming out from the front and side of the valve cover and oil on the flange.








TheGerman is offline   Quote Quick Reply
Old 06-15-2014, 10:44 PM   #4
Jeeper
 
tbensor's Avatar
 
Join Date: Feb 2012
Posts: 1,145
Pics tell a different story. You could replace the cap but that seems like a lot of pressure. You seem to have an aftermarket vent on the valve cover. Wonder if it is bad? You definitely have an aftermarket air intake. Usually the breather goes into the intake
__________________
My Toys
2003 RED Jeep Wrangler X - Can't stop adding stuff and updating.
2014 White Jeep Liberty Sport
2011 Carbon Black GMC Yukon Denali
2007 Black GMC Sierra 2500HD 4x4 Duramax/Allison
2007 Keystone Laredo 284BHS TT
tbensor is offline   Quote Quick Reply
Old 06-15-2014, 10:52 PM   #5
Jeeper
 
Join Date: Sep 2013
Posts: 30
Bought it with the vent on it; haven't messed with it at all. Dumb question but how would I know if its bad, or just put a new one on and see? Any suggestions on what to get (I didnt buy the one thats on there); I see K&N makes a breather but don't know what people reliably use.

Could that alone be causing this? What would cause oil to be on the front of the valve cover as well? Gasket plus too much pressure, or the pressure is practically overwhelming the gasket?
TheGerman is offline   Quote Quick Reply
Old 06-16-2014, 02:29 PM   #6
Jeeper
 
Join Date: Sep 2013
Posts: 30
So besides the breather, any ideas? I checked the breather and there isn't a drop of oil on it, so I doubt its clogged and it doesn't seem to have any pressure forcing oil into it.

Could this be something as stupid as needing a new oil fill cap/making a better gasket for it? Or do I have other issues?
TheGerman is offline   Quote Quick Reply
Old 06-16-2014, 04:52 PM   #7
Jeeper
 
DoubleOught's Avatar
 
Join Date: Feb 2014
Location: Nashville GA
Posts: 1,178
It looks like the crank case is pressurized. With the motor idling and the oil filler cap off, or the vent at the rear, is it blowing air out of the valve cover. If so, you probably have some broken rings or the motor is just worn out.

DoubleOught is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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.



Thread Tools

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 Off
Refbacks are Off




» Featured Product

All times are GMT -5. The time now is 04:03 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC