Cant believe it's still leaking -
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post #1 of 6 Old 05-31-2013, 08:05 PM Thread Starter
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1989 YJ Wrangler 
Join Date: May 2012
Location: N. Brookfield
Posts: 29
Cant believe it's still leaking

I love my YJ but I'm ready to accidently leave a gas soaked rag sticking out of the gas tank and accidently light it.

Ok I noticed an oil leak so I thought it was coming from the distributor the o ring at the bottom of it was not to be found so I figured that was probably not good. I replaced that. That's no longer leaking.

Next I've read that the valve cover likes to leak at the back of the block and may resemble a rear main seal leak so I replaced the valve cover gasket. Still have leak.

Next I had the rear main seal done yesterday, old one was total junk.

Ok here's the problem IT'S STILL LEAKING!!!!!

It's an 89 six cyl with a five speed. It seems to leak when it gets warm. It's about a dropp every 5 seconds or so. Amounts to very little when it sits overnight. I think because of when it cools off it seems to stop. I'm currently running 5W30 any thoughts comments ideas anything would be appreciated. Thanks

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post #2 of 6 Old 05-31-2013, 08:13 PM
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1988 YJ Wrangler 
Join Date: Aug 2004
Location: Versailles
Posts: 2,374
Look at the oil senders above the starter. The. PO of mine that the rear main was hosed. It was a sending unit.

Anything is possible if you don't know what you are talking about.
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post #3 of 6 Old 05-31-2013, 08:16 PM
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1992 YJ Wrangler 
Join Date: Dec 2012
Location: The Desert
Posts: 6,450
For starters, I NEVER throw random parts at anything. If I had an oil leak, I would completely degrease and clean the motor. I would then climb under it and watch for a leak. Fans and wind blow oil around.
If I still had trouble, I would use florescent leak detector dye and a black light. I guarantee you will find it.

"Auto racing began 5 minutes after the second car was built."
Henry Ford
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post #4 of 6 Old 05-31-2013, 08:41 PM
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1990 CJ7 
Join Date: Nov 2008
Location: Ga
Posts: 5,145
Run 15W-40 Rotella, not that rice motor thin stuff.

Run your oil level 1 qt below full, not at top of full unless you are going off road soon.

You must have over 20" of vacuum at idle, and your PCV system must be clean and working well, no restrictions from bad hose, baffle in valve cover or vacuum port.

418 miles on 19 gallons of gas. Can't beat the BBD !
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post #5 of 6 Old 05-31-2013, 09:31 PM Thread Starter
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1989 YJ Wrangler 
Join Date: May 2012
Location: N. Brookfield
Posts: 29
Thanks for the replies.

CJ51973 I had someone else suggest that as well. 92 YJ normally I wouldnt just throw parts at it but figured for the cost what the heck. I will try that leak detector. Thanks. Also I was thinking that the oil was very thin thanks again for the replies.
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post #6 of 6 Old 06-01-2013, 09:40 AM
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1983 CJ7 
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Originally Posted by CJ51973 View Post
Look at the oil senders above the starter. The. PO of mine that the rear main was hosed. It was a sending unit.
X2. There is a sensor for the oil guage and oil light. Mine was leaking oil all over and it ended up being the sensor for the light which was 5.99. It wasn't leaking enough where oil needed to be added but it still managed to get all over the passenger side of the engine.
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