Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

Just looking at the pan, how do you know...

Thread Tools
 
Search this Thread
 
Old 03-30-2010, 05:26 PM
  #1  
Senior Member
Thread Starter
 
ken72's Avatar
 
Join Date: Jan 2010
Location: Brentwood, TN
Posts: 999
Likes: 0
Received 0 Likes on 0 Posts
Year: 2001
Model: Cherokee
Engine: 4.0
Default Just looking at the pan, how do you know...

if the leak is coming from the rear main seal and not the oil pan gasket itself. You can not see the RMS and it appears the RMS is covered by the pan. So how do you know its the RMS that is leaking and not the pan itself? Mine is leaking around right now a few drops of oil per day but it drips from the bottom of the pan.
Old 03-31-2010, 09:43 AM
  #2  
Seasoned Member
 
TheNerd's Avatar
 
Join Date: Oct 2009
Posts: 254
Likes: 0
Received 0 Likes on 0 Posts
Year: 2001
Model: Cherokee
Engine: 4.0L
Default

Does it drip if it has been sitting for a long time, or just after you have been driving?

Only drips after use = RMS

Either way, the RMS is a very common leak location on the 4.0, and the oil pan gasket is not. Since you need to do the pan gasket if you do the RMS, you might as well do the RMS (it is easy) and take care of both options. Murphy's Law states that if you only replace the pan gasket, the problem will the be RMS.
Old 03-31-2010, 09:51 AM
  #3  
"CF Moderator"
 
TrekkerJmm's Avatar
 
Join Date: Sep 2008
Location: N.J. Shore Area
Posts: 3,045
Likes: 0
Received 2 Likes on 2 Posts
Year: 1994
Model: Cherokee
Engine: l6 HO
Default

Originally Posted by TheNerd
Does it drip if it has been sitting for a long time, or just after you have been driving?

Only drips after use = RMS

Either way, the RMS is a very common leak location on the 4.0, and the oil pan gasket is not. Since you need to do the pan gasket if you do the RMS, you might as well do the RMS (it is easy) and take care of both options. Murphy's Law states that if you only replace the pan gasket, the problem will the be RMS.
X2 but before you do a RMS make sure it not coming from the back of the valve cover gasket (another common leak-er) ...Tj
Old 03-31-2010, 09:56 AM
  #4  
CF Veteran
 
fantic238's Avatar
 
Join Date: Jun 2009
Posts: 5,383
Likes: 0
Received 4 Likes on 1 Post
Year: 1988 limited
Model: Cherokee
Engine: 4.0 litre
Default

the RMS usually drips from the bell housing.
If the drips come from the starter it's the o-rings of the filter adapter
if the pan has oil around the bottom it's the cap seal or the pan gasket
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MidwestNick
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
10
02-28-2016 02:05 AM
sbc003
Introductions
2
09-27-2015 11:13 AM
Dr.Capacitor
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
4
09-25-2015 03:02 PM
Zerocyde
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
09-22-2015 08:59 PM
Jooman07
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
6
09-20-2015 03:12 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: Just looking at the pan, how do you know...



All times are GMT -5. The time now is 01:16 PM.