Oil leak in LJ I'm looking at - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Like Tree1Likes
  • 1 Post By RocknLJ
Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 11-18-2019, 09:34 PM
Thread Starter
  #1
Jeeper
 
Join Date: Dec 2014
Location: Ann Arbor, MI
Posts: 28
Oil leak in LJ I'm looking at

Hi, I'm in the market for an LJ and came across one for under 10k. 6 speed, 150k miles, hard top and bikini top. Previous owner had it less than a year and replaced the radiator, alternator, blower motor resistor, rear glass hinges, headlights, u-joints (recently, still need driveshaft balanced) the CV yoke in the front driveshaft, parking brake shoes and tensioner, and he has the heater core to fix replace current one with slow leak (pretty laborious diy). Also has no back seat.

Rust looks ok I think. My main concern (besides the pita heater core job) is an apparent oil leak somewhere near the front diff/front of the trans. Owner says he hasn't noticed any spotting where he parks it. Should I be concerned about this, or just go for it and get it cleaned up and figured out if I get it?

Also, should replacing the OPDA be a priority on any 05-06 if that hasn't been done?

Thanks!

Attached Thumbnails
Click image for larger version

Name:	received_783491835429533_1574130708666.jpg
Views:	20
Size:	142.3 KB
ID:	4186253   Click image for larger version

Name:	received_1234461956738196_1574130725125.jpg
Views:	18
Size:	205.1 KB
ID:	4186255  

Click image for larger version

Name:	received_1143197432550872_1574130752344.jpg
Views:	16
Size:	151.3 KB
ID:	4186257   Click image for larger version

Name:	received_1032639807076872_1574130761653.jpg
Views:	17
Size:	114.6 KB
ID:	4186259  

Click image for larger version

Name:	received_2817435601623880_1574130773398.jpg
Views:	16
Size:	154.8 KB
ID:	4186261  
__________________
Life is good
zachsch is offline   Quote
Old 11-18-2019, 09:36 PM
Thread Starter
  #2
Jeeper
 
Join Date: Dec 2014
Location: Ann Arbor, MI
Posts: 28
More frame pics
Attached Thumbnails
Click image for larger version

Name:	received_485094592095553_1574130918078.jpg
Views:	15
Size:	157.7 KB
ID:	4186263   Click image for larger version

Name:	received_551563465643034_1574130932829.jpg
Views:	15
Size:	155.4 KB
ID:	4186265  

Click image for larger version

Name:	received_1003625479974332_1574130950252.jpg
Views:	15
Size:	144.1 KB
ID:	4186267   Click image for larger version

Name:	received_2559677464129271_1574130966149.jpg
Views:	15
Size:	134.3 KB
ID:	4186269  

Click image for larger version

Name:	received_434549670790569_1574130986514.jpg
Views:	15
Size:	133.1 KB
ID:	4186271  

__________________
Life is good
zachsch is offline   Quote
Old 11-18-2019, 09:39 PM
Thread Starter
  #3
Jeeper
 
Join Date: Dec 2014
Location: Ann Arbor, MI
Posts: 28
Last couple frame pics, and a few interior/exterior.

Thanks for any input!
Attached Thumbnails
Click image for larger version

Name:	received_2279098992382124_1574131091002.jpg
Views:	15
Size:	161.8 KB
ID:	4186273   Click image for larger version

Name:	received_561516527755012_1574131104470.jpg
Views:	16
Size:	152.5 KB
ID:	4186275  

Click image for larger version

Name:	received_1170265056695415_1574131117854.jpg
Views:	15
Size:	165.6 KB
ID:	4186277   Click image for larger version

Name:	received_468804993747895_1574131130997.jpg
Views:	15
Size:	162.8 KB
ID:	4186279  

Click image for larger version

Name:	received_2548407235239278_1574131144038.jpg
Views:	15
Size:	142.3 KB
ID:	4186281  
__________________
Life is good
zachsch is offline   Quote
Sponsored Links
Advertisement
 
Old 11-18-2019, 09:44 PM   #4
I drive Papa Smurf

WF Lifetime Member
WF Supporting Member
::WF Moderator::
 
Pressurized's Avatar
 
Join Date: Jan 2014
Location: Gilbert, AZ
Posts: 13,985
I'm a bit new to the LJ/TJ crowd, but just had my LJ gone through and "leaks" fixed by a pro. He told me going in, there are 3 common spots for oil leaks... The valve cover gasket, the rear main seal and the trans oil pan on an auto. Mine was both the valve cover gasket and the trans pan.

I'm sure you'll get more input... Good crew here.
__________________
2006 LJ Rubicon - Solar Yellow - Very Stock'ish - The Press Casual LJ-R build
2012 JKU Sahara - Pro Comp LED Headlights - PRS Audio mod- SWS - GraBars - Bestop Cargo Cover
- Mopar 2" Frankenlift - Teraflex Falcon Shocks - RE TB/Brackets - JKS mount/Bilstein stabilizer -
Rugged Ridge XHD
bumper- Yukon Gears - G2 Diff Covers - Pro Comp 8186 - Milestar Patagonia 35's

- TORQ Locker - 1310 Driveshaft - PowerTrax Grip Pro - Full Core 4x4 Control Arms and Track Bars
Pressurized is offline   Quote
Old 11-18-2019, 10:16 PM
Thread Starter
  #5
Jeeper
 
Join Date: Dec 2014
Location: Ann Arbor, MI
Posts: 28
Ah, thanks for the tip. Given how clean the engine bay looks and that it's a manual, I'm going to guess it's the rear main seal; seems like the oil residue is all in the right spots. Not the worst thing in the world, if the OPDA has to be replaced down there anyway..
__________________
Life is good
zachsch is offline   Quote
Old 11-18-2019, 11:05 PM   #6
Jeeper
 
Gottagofast's Avatar
 
Join Date: May 2017
Posts: 8,169
Opda isn't down there.... it's the thing where the distributor would be
__________________
I come in peace.... I mean you no harm
Currently in the stable: ... 97 tj 4.0 5 speed stock....04 tj 4.0 auto 4" and 33's... 98 tj roller for future build... 94 yj sahara 4.5" RE and 33's... 92 yj sbc 3/4 ton axles and 38's... Cj5,7,yj,xj,ex mud dragster project

TJ dash speakers that actually rock! Kicker sub and amp in center console
Gottagofast is offline   Quote
Old 11-19-2019, 10:31 PM   #7
Jeeper
 
RocknLJ's Avatar
 
Join Date: Jul 2015
Location: Lancaster, Ca
Posts: 606
Always start at the top and work your way down for an oil leak fix. The valve cover leak can often look like an RMS leak and is way easier to fix, so start there. I've done 3 rear main seal jobs and hope to never do one again, especially on an LJ with the added fun of the exhaust and skid plate removal.
Pressurized likes this.
__________________
2006 Jeep Wrangler Unlimited Rubicon (Impact Orange)

Previous owner of: '01 KJ Renegade; '00 WJ Loredo; '99 XJ Sport; '06 WK Overland; '99 XJ Classic; '05 LJ Rubicon; '99 TJ Sport.
RocknLJ is offline   Quote
Old 11-20-2019, 06:35 AM   #8
Jeeper
 
ibikee's Avatar
 
Join Date: Sep 2015
Location: South of Nashville Tn
Posts: 790
Just did my valve cover gasket. Not to bad a job, but having 3.5” of lift added to the difficulty. If the leak is from the valve cover you will see wet oil down the block, all over the oil pan and on mine even around the front of the motor and pulleys. It drips off the clutch inspection plate and sprays across the tranny. Looks just like a rear main seal leak, if it weren’t for the wet block.
__________________
2015 2dr Sport. Rubicon springs and shocks take offs for 1 1/2 inch lift. Auto. Regeared Yukon 4:11, 33" duratracs
2004 Rubicon. OME 2.5” lift. 1” body lift. 33” MTs.
ibikee is online now   Quote
Old 11-20-2019, 06:49 AM   #9
Moderator

WF Lifetime Member
WF Supporting Member
::WF Moderator::
 
Join Date: May 2011
Posts: 7,346
Quote:
Originally Posted by RocknLJ View Post
Always start at the top and work your way down for an oil leak fix. The valve cover leak can often look like an RMS leak and is way easier to fix, so start there. I've done 3 rear main seal jobs and hope to never do one again, especially on an LJ with the added fun of the exhaust and skid plate removal.
That's how you do it! Check the valve covers first. Since the OP has a stick gear oil in the transmission has its special special odor. LOL If you run into a problem finding the leak clean the engine, bell housing, and transmission, then add UV dye to the oil. Drive it for a while, get the UV dye black light and search for the leak with that. If there is oil appearing where a RMS leak would be smell it, or check it with the light. Gear oil or ATF won't show up with dye in it since the dye was added to the engine oil, it will also smell like gear oil or ATF and most likely be the front seal in the transmission. A RMS leak will show up with the light if dye was added.

__________________
1988 E-150 4.9L 5 Speed Stick
2008 Jeep Liberty Auto Trans
2016 JK Rubicon Hard Rock Auto Trans

God Bless Our Troops
demarpaint is offline   Quote
Reply

Thread Tools

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 Off
Refbacks are Off






All times are GMT -5. The time now is 06:28 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, Gladiator, Mopar and Grand Cherokee are copyrighted and trademarked to FCA US LLC.
Wranglerforum.com is not in any way associated with FCA US LLC.