Found oil leak, what do I do now? - JeepForum.com

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post #1 of 25 Old 01-13-2010, 08:35 AM Thread Starter
MSBXCJ
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Found oil leak, what do I do now?

Im almost positive oil leak is coming from rear main seal. It is seaping out of the bottom of transmission where it meets the back and bottom of oil pan. Isnt that where the rear main seal is? If I am right, after I buy a new seal, what do I do then? Is this a pain in the butt to fix? Thanks, I dont know what I am doing.....

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post #2 of 25 Old 01-13-2010, 08:38 AM
rrtex1
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1981 CJ7 
 
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Can I bring mine over and do them at the same time? I think I have the same problem.

Round Rock, Texas
1981 CJ7 AMC304
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post #3 of 25 Old 01-13-2010, 08:39 AM
fredrok
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Never seen a 258 that didn't seep. Just marking it's territory.

If you don't have time to do it right, how will you ever find time to do it again?
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post #4 of 25 Old 01-13-2010, 08:48 AM Thread Starter
MSBXCJ
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rrtex1, you are in round rock? cool. if i buy the seals will u fix them? hehe
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post #5 of 25 Old 01-13-2010, 08:49 AM Thread Starter
MSBXCJ
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Is this something important i should worry about? its kinda messy...
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post #6 of 25 Old 01-13-2010, 08:59 AM Thread Starter
MSBXCJ
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it is coming from here...
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post #7 of 25 Old 01-13-2010, 09:00 AM Thread Starter
MSBXCJ
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post #8 of 25 Old 01-13-2010, 09:05 AM
Twistedper
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Mine did too. I just happened to have a motor that doesn't leak and now am in the process of finishing the swap. It doesn't help much that it is COLD here. It is one of those things where you have to weigh, amount of work to fix and how much does it bother you. I know I will get the opportunity to fix the motor that I pulled but until it warms up I haven't done it yet. Anyway good luck.

79 CJ 7, 258 I6 TR, T 150, Dana 20, Dana 30, AMC 20 and 31" Uniroyal A/T Tires
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post #9 of 25 Old 01-13-2010, 09:11 AM
Mike Romain
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Before attacking a rear main, I highly recommend you run the engine for a few minutes to warm it up and then take a clean rag and rub the engine head around the back side below the valve cover. If you find oil there, you have found the leak likely, well 'a' 'valve cover' leak that for sure imitates a rear main seal leak perfectly.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos: http://mikeromainjeeptrips.shutterfly.com (10 new albums added Sept 16/10)

Last edited by Mike Romain; 01-13-2010 at 09:20 AM. Reason: forgot a couple words.
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post #10 of 25 Old 01-13-2010, 09:17 AM Thread Starter
MSBXCJ
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Thanks Mike!! If I find a leak there, is that the valve cover leaking?
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post #11 of 25 Old 01-13-2010, 09:20 AM
Mike Romain
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Quote:
Originally Posted by MSBXCJ View Post
Thanks Mike!! If I find a leak there, is that the valve cover leaking?
Oh yes, and the engine tilts back so it runs right down to the bottom.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos: http://mikeromainjeeptrips.shutterfly.com (10 new albums added Sept 16/10)
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post #12 of 25 Old 01-13-2010, 09:24 AM Thread Starter
MSBXCJ
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i hope it is just the VC....
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post #13 of 25 Old 01-13-2010, 09:29 AM
DT5150
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if you find it is your rms leaking, here's an excellent step-by-step with pics write-up on how to do it. it's not an overly difficult job, but it is a pita. pretty messy and time consuming but doable if you're somewhat mechanically inclined.

Rear Main Seal Service and Replacement

SOLD! 83 CJ-7. TBI Small Block Chevy 350/TH350/D300, Scout II Dana 44 front, CJ Dana 44 rear. 4" BDS Lift with 35's. Currently Jeepless.
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post #14 of 25 Old 01-13-2010, 09:51 AM
thord
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Quote:
Originally Posted by MSBXCJ View Post
Im almost positive oil leak is coming from rear main seal. It is seaping out of the bottom of transmission where it meets the back and bottom of oil pan. Isnt that where the rear main seal is? If I am right, after I buy a new seal, what do I do then? Is this a pain in the butt to fix? Thanks, I dont know what I am doing.....
Add enough oil to replace the missing oil!!!

Congrats you now have a CJ!
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post #15 of 25 Old 01-13-2010, 11:27 AM
MoC
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Did mine a few months back. As you will see when you read the step by step instructions will have to remove a motor mount. Even with the motor mount out is was still a little tricky getting it in to place without knocking a gasket loose. Having a extra set of hands around really made getting the oil pan back in to place easier.
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