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Old 11-20-2013, 10:44 PM   #1
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New and Clueless YJ Owner

So I'm not only new to owning my 92' YJ Jeep Wrangler, but new to this forum as well. I'm Leaking from the bottom of my bellhousing on my jeep.

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Old 11-21-2013, 05:40 AM   #2
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Sounds like the rear main seal, it's common. How much oil are you using?

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Old 11-21-2013, 06:15 AM   #3
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Is your clutch master cylinder full?
It could be rear main (oil), clutch, or possible oil leaking from rear valve cover running down the back side of your engine.
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Old 11-21-2013, 02:32 PM   #4
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First thing is to wash down the engine and bellhousing etc. with a degreaser...get it clean and then start checking...first place to look is the rear of the valve cover.....the oil will run down back of motor and onto the bell.
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Old 11-21-2013, 02:42 PM   #5
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Did you recently change the oil and use synthetic?
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Old 11-21-2013, 03:00 PM   #6
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Could be the front transmission seal...
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Old 11-21-2013, 04:12 PM   #7
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I had oil in the same spot. I did the valve cover gasket. Didn't help. Did the oil pan gasket and rear main seal (easy on a 4.2 not so much on a 2.5). None of that stopped the leak. Cleaned the engine very well and kept a close eye on it. Turns out the oil fill cap on the valve cover didn't seal. Oil would come out on top of the valve cover and run back and down the engine. Comes out right where engine meets tranny. Ordered a new cap. Still the same. Bought some sheets of gasket material of varying thickness. Made a new seal for the cap out if the thickest. Problem solved.

So I spent hours doing repairs I didn't need to. I don't really mind because it was invaluable learning, but money I could have spent else where.

Moral of the story...
... Clean your engine and watch closely. It may not leaking from the obvious spot. Keep in mind, wind will push it back. If it's leaking look forward of the leak not just up.

Good luck!
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Old 11-22-2013, 08:59 AM   #8
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Check you cvc valve, could be stopped up, causing pressure to build up in engine and pushing oil out the dipstick, I changed oil pan gasket, rear main seal, and valecover gasket, also the cap where you put oil in.still leaked.so changed the cv valves, has been dry.
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Old 11-23-2013, 04:03 AM   #9
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I was told it's my slave cylinder. I work seven/ten hour days a week so it's been a challenge getting the time to diagnose my jeep. For starters ill make sure all my fluids are filled up an bleed my clutch before I degrease the tranny an what not. I lost clutch pressure one day an had a good leak of dot 3. So once I've filled an bled the clutch if I lose fluid an see the same like is it safe to say it's definitely my slave cylinder?
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Old 11-23-2013, 04:05 AM   #10
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Thanks in advance to everyone who's giving their time to help me with this.
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Old 11-23-2013, 08:52 AM   #11
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Originally Posted by Mr.YJ View Post
Thanks in advance to everyone who's giving their time to help me with this.
If its hydraulic fluid then yes. I would pick up a new bellhouse and convert it to an external if you can. Will save you headaches in the future.
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Old 11-23-2013, 10:02 PM   #12
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What are all the tools I will need in order to successfully swap from an internal to external? And also, would it be cheaper an easier to stay internal an replace clutch assembly with new parts or just swap to external? I have zero experience under a vehicle but also cannot afford to have a shop do it not to mention I want to learn.
Thank you all
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Old 11-24-2013, 06:36 AM   #13
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What are all the tools I will need in order to successfully swap from an internal to external? And also, would it be cheaper an easier to stay internal an replace clutch assembly with new parts or just swap to external? I have zero experience under a vehicle but also cannot afford to have a shop do it not to mention I want to learn.
Thank you all
It isn't hard, but you would need someone to help who has done some work in the past. You pull the transmission and swap the bellhouse and bearing retainer. Then you do the internal slave with the external. It adds work to the job you already have to do of replacing the slave, but if you ever do it again you will be able to do it without messing with the transmission. Well also add about $100 worth of parts to the cost of doing the job. As for tools, just the basics and a good jack.

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