International Full Size Jeep Association
Home Forums Reader's Rigs Tech Library Trail Stories FSJ-List
International Full Size Jeep Association  

Go Back   International Full Size Jeep Association > Tire Kickin' > General FSJ Tech

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 01-14-2007, 05:43 PM
AlsChopShop's Avatar
AlsChopShop AlsChopShop is offline
 
Join Date: Sep 20, 2005
Location: Portland, Orygun!
Posts: 5,428
major oil leak...

developed a hefty oil leak between the motor and bellhousing of the trans today just running down the street and back.

what would be the culprit and how would i go about fixing it?

Al
__________________
79 Cherokee Chief "Kronk" - TBI350/SM465/NP205
99 Dodge 2500 4x4 - Cummins 24v
07 Mazdaspeed3 GT - Big turbo, 340whp
Reply With Quote
  #2  
Old 01-14-2007, 05:47 PM
Crazy_Jeepman's Avatar
Crazy_Jeepman Crazy_Jeepman is offline
Sloppy Shifter
 
Join Date: Jan 16, 2001
Location: Norway Michigan
Posts: 15,996
Well sounds like a rear main seal. Though it could be from the back of the intake manifold, or Valve Covers, you would need to nail it down as to where it is actually coming from.
__________________
Daily Driver 2008 Wrangler Sahara
Going, Gone, or Thinking Fishing
Reply With Quote
  #3  
Old 01-14-2007, 05:56 PM
AlsChopShop's Avatar
AlsChopShop AlsChopShop is offline
 
Join Date: Sep 20, 2005
Location: Portland, Orygun!
Posts: 5,428
i'm 90% sure its not the valve covers or intake.

Al
__________________
79 Cherokee Chief "Kronk" - TBI350/SM465/NP205
99 Dodge 2500 4x4 - Cummins 24v
07 Mazdaspeed3 GT - Big turbo, 340whp
Reply With Quote
  #4  
Old 01-14-2007, 09:01 PM
jsinajeep's Avatar
jsinajeep jsinajeep is offline
304 AMC
 
Join Date: Nov 26, 2005
Location: Globe AZ
Posts: 2,295
Well first, is it engine oil or trans oil. If you don't know do the tast test. Red or burn smell = trans, and brown to black = engine. [most of the time]
Reply With Quote
  #5  
Old 01-14-2007, 10:25 PM
joe joe is offline
 
Join Date: Apr 28, 2000
Location: PNWet, USA
Posts: 22,392
Yup AMC's patented Rust Proofing and Chassis Lubrication Port...aka rear main seal.
Might take a close look at the valve cover gaskets too. They can leak from the rear and make it look like a rear main seal leak.
__________________
joe
"Don't mind me. I'm just here for the alibi"
Reply With Quote
  #6  
Old 01-14-2007, 10:36 PM
wangoneer's Avatar
wangoneer wangoneer is offline
Member
 
Join Date: Aug 11, 2005
Location: Omaha, NE
Posts: 136
Quote:
Originally Posted by -joe
Yup AMC's patented Rust Proofing and Chassis Lubrication Port...aka rear main seal.

I'm not fixing my rear main until winters over! It's the only reason my wag has lasted so long in salty Nebraska. With any luck, it will blow again by next winter!
__________________
Brian
81 Wagoneer
360 w/Holley Truck Avenger carb, 727 trans, 208 T-case, D44 open front diff, AMC20 w/Aussie locker out back
4" BJ's lift, "slightly" trimmed fenders, 34" LTB's, dewooded
Reply With Quote
  #7  
Old 01-15-2007, 01:30 PM
AlsChopShop's Avatar
AlsChopShop AlsChopShop is offline
 
Join Date: Sep 20, 2005
Location: Portland, Orygun!
Posts: 5,428
i waited for the motor to cool then ran my hand behind each valve cover and around the back of the intake... just grime, no oil. so it has to be the rear main. and no, it isn't trans fluid.

anyone have the writeup on how to change it? or should i just drop in the SBC a little earlier than planned?

i'd drive the darn thing but it's smokin real bad and with my luck i'd catch it on fire.

Al
__________________
79 Cherokee Chief "Kronk" - TBI350/SM465/NP205
99 Dodge 2500 4x4 - Cummins 24v
07 Mazdaspeed3 GT - Big turbo, 340whp
Reply With Quote
  #8  
Old 01-15-2007, 01:48 PM
FSJ Thing's Avatar
FSJ Thing FSJ Thing is offline
Propane Protagonist
 
Join Date: Aug 25, 2002
Location: Granite Falls, WA 98252
Posts: 3,824
Might be the cam plug too. If it's a leak that's gradually gotten worse over time, it's probably the rear main. If it's all the sudden puking oil out of the back of the motor it's likely the cam plug, which is bad, because it's one less thing to keep your cam from walking...

I hope it's just the rear main. That's easier to fix anyways.
__________________
The Cherowagladabego Project. Updates coming as soon as I do something update worthy.

Bring back Junk Yard Genius! he may have peed in some of your cornflakes, but everything he told me was helpful!
Reply With Quote
  #9  
Old 01-15-2007, 01:50 PM
scantar's Avatar
scantar scantar is offline
FSJ Maniac
 
Join Date: Jul 16, 2005
Location: OK Denver, dangit! :)
Posts: 4,296
Quote:
Originally Posted by AlsChopShop

anyone have the writeup on how to change it? or should i just drop in the SBC a little earlier than planned?

i'd drive the darn thing but it's smokin real bad and with my luck i'd catch it on fire.

Al

Al,

There's a writeup in the Archive section...just saw it last night.

Steve
__________________
'76 Waggy, TH400, Quadratrac and a fourOH!one Sold

My other car is a Viner Pro Team...no wait, my other car is a Masi Speciale...nonono, my other car is a Bianchi 928SL
Reply With Quote
  #10  
Old 01-15-2007, 01:53 PM
Ristow Ristow is offline
 
Join Date: Jan 20, 2006
Location: The Great Googley Moogley Midwest.
Posts: 17,275
personally,everytime i had a bad leak back there,and was convinced it was a rear main seal,it turned out being somewhere else. look carefully,there is a lot of air turbulence down there,and it can push oil all over the place,making it hard to pinpoint it's source.
__________________
Quote:
Originally Posted by Hankrod
Ristows right.................again,




Quote:
Originally Posted by Fasts79Chief
... like the little 'you know what's' that you are.




Quote:
Originally Posted by Fasts79Chief
I LOVE how Ristow has stolen my comment about him ... "Quoted" it ... and made himself famous for being an ***hole to people. Hahahahahahahahahha!


→ Where the kids hang out...

fsjbuilder.org come for the mindless chat,stay for the hand drawn emoticons.

It's like you're unraveling a big cable-knit sweater that someone keeps knitting...and knitting...and knitting...and knitting...
Reply With Quote
  #11  
Old 01-15-2007, 02:00 PM
joe joe is offline
 
Join Date: Apr 28, 2000
Location: PNWet, USA
Posts: 22,392
Quote:
Originally Posted by AlsChopShop
anyone have the writeup on how to change it? or should i just drop in the SBC a little earlier than planned?l
The Tech Library on the IFSJA main page is your friend.
http://www.ifsja.org/tech/motors/rearmainseal.html
__________________
joe
"Don't mind me. I'm just here for the alibi"
Reply With Quote
  #12  
Old 01-18-2007, 01:51 AM
AlsChopShop's Avatar
AlsChopShop AlsChopShop is offline
 
Join Date: Sep 20, 2005
Location: Portland, Orygun!
Posts: 5,428
excellent. i'm glad to hear i don't have to drop the trans. hopefully i can get it done saturday so i can drive it to our next wheeling trip sunday. thanks guys!

Al
__________________
79 Cherokee Chief "Kronk" - TBI350/SM465/NP205
99 Dodge 2500 4x4 - Cummins 24v
07 Mazdaspeed3 GT - Big turbo, 340whp
Reply With Quote
  #13  
Old 01-18-2007, 03:59 AM
joe joe is offline
 
Join Date: Apr 28, 2000
Location: PNWet, USA
Posts: 22,392
Al, I don't remember if the article mentions it but you'll want to jack the front end up and support the frame on stands on both sides so the front axle hangs down. That'll give you enough room to wiggle the oil pan in/out.
__________________
joe
"Don't mind me. I'm just here for the alibi"
Reply With Quote
  #14  
Old 01-18-2007, 04:20 AM
AlsChopShop's Avatar
AlsChopShop AlsChopShop is offline
 
Join Date: Sep 20, 2005
Location: Portland, Orygun!
Posts: 5,428
thanks for the tip joe!

Al
__________________
79 Cherokee Chief "Kronk" - TBI350/SM465/NP205
99 Dodge 2500 4x4 - Cummins 24v
07 Mazdaspeed3 GT - Big turbo, 340whp
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 08:58 PM.


Powered by vBulletin Version 3.5.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
corner corner