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Unread 03-24-2014, 03:00 PM   #1
PHARIS88
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Is New Rear Main Seal Bad Already?

So I gave a buddy of mine a case of beer and $100 and the parts to fix the rear main seal, for me since I haven't had time to fix it yet.

Is it possible that is got pushed/blown out? I drove it maybe 15 miles and my Jeep farted a HUGE smoke grenade down the highway. It poured oil from the area it was leaking...

Now my question is, is it common for these to be installed and then go bad? What is the issue here??

New "BAD" seal??

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Unread 03-24-2014, 03:03 PM   #2
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Unread 03-24-2014, 03:14 PM   #3
KJK
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Maybe you should have told your buddy to drink the case of beer AFTER the install.
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Unread 03-24-2014, 03:23 PM   #4
90Notch306
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If there is that much oil already then i would say it was a improper installation. However, i did a rear main seal on my 5.2 and it still leaked oil. Recently pulled the transmission and noticed the oil leak was coming from the camshaft plug. Replaced the plug and put some sealant on it and the leak is gone now
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Unread 03-24-2014, 03:33 PM   #5
PHARIS88
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Quote:
Originally Posted by KJK View Post
Maybe you should have told your buddy to drink the case of beer AFTER the install.
haha, I didn't pay him or give him the beer until I picked it up, he currently has the jeep again and fixing what he was SUPPOSED TO lol

Quote:
Originally Posted by 90Notch306 View Post
If there is that much oil already then i would say it was a improper installation. However, i did a rear main seal on my 5.2 and it still leaked oil. Recently pulled the transmission and noticed the oil leak was coming from the camshaft plug. Replaced the plug and put some sealant on it and the leak is gone now

Yeah I just bought a brand new tranny, and I'm 99% sure it was an improper installation, I just want to make sure something else isn't wrong with the motor causing the rear main to go bad?
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Unread 03-24-2014, 04:16 PM   #6
Candymancan
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Quote:
Originally Posted by KJK View Post
Maybe you should have told your buddy to drink the case of beer AFTER the install.


Im sorry but that was hilarious
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Unread 03-24-2014, 06:10 PM   #7
HighLonesome
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Quote:
Originally Posted by KJK View Post
Maybe you should have told your buddy to drink the case of beer AFTER the install.


There is much that could go wrong. Seal in backwards, seal got nicked, lack of anerobic sealant at critical places...
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Unread 03-24-2014, 09:15 PM   #8
1998_ZJltd
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Quote:
Originally Posted by PHARIS88 View Post
haha, I didn't pay him or give him the beer until I picked it up, he currently has the jeep again and fixing what he was SUPPOSED TO lol
he may have primed his pump before starting ....

but like the others have said there are a lot of things that could have gone wrong ...

hopefully he re-torqued the mains back down correctly ....
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Unread 03-24-2014, 09:18 PM   #9
WhiteOut
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That's almost like there is half a seal in there lol. Should be no leaks at on a properly installed rear main.
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Unread 03-25-2014, 04:56 AM   #10
jeepjeepster
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Yeah I couldn't imagine a seal putting out that much oil unless something was bad wrong (backwards, nicked BAD). I coated mine in Vaseline when I put it back in and it was pretty hard to push it around the crank without nicking it. At the time, I didn't think about loosening up some other crank bolts to relieve some pressure on the seal. Mine still weeps, but I hardly ever see a drip on the driveway. Before it would drip a few drips every time I parked.
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Unread 03-25-2014, 08:05 AM   #11
cekmgreen
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i had to do mine twice to get it right i tore the first one a little bit...... and yes it leaked lol had to start over been good now for over a year
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Unread 03-25-2014, 08:36 PM   #12
dusterdude
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It doesnt take much to booger up a new seal
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Unread 03-28-2014, 04:03 PM   #13
PHARIS88
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So drove the Jeep 40 miles round trip to work and back.. and no LEAKS! HOWEVER!!! My oil pressure gauge will run at about 40-45psi going down the highway at 65mph... (WHICH I KNOW IS NORMAL). BUT I have been paranoid that something is wrong, b/c before the new tranny, new rear main seal, after the new oil pan gasket, and new oil filter.. my pressure gauge seemed to ALWAYS be at 40 and rarely went above or below it. NOW the gauge will go all the way down to about 18-20... Oil light doesn't come on and I'm not leaking oil (as of right now) lol

I researched the threads about "normal pressure" and some threads say it's normal some say I need a motor ha

Sound normal to you?
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Unread 03-28-2014, 04:05 PM   #14
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Quote:
Originally Posted by WhiteOut View Post
That's almost like there is half a seal in there lol. Should be no leaks at on a properly installed rear main.
oh and you were pretty much right lol the "new seal" was all kinds of screwed up haha
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Unread 03-28-2014, 04:55 PM   #15
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My 94 holds right at 60-70 at 55-65mph and 20-30 at idle when warm.
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