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Old 11-15-2013, 07:32 AM   #1
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Leaks

I don't know, but I am hoping to find out, where I am bleeding oil. I seem to be leaking quite a bit lately. Here's a question:

It seems that it is coming out the back side of the Jeep. I've heard that if the gasket on the valve cover is worn out, it will leak from there and then come out from around the skid plate. Has anyone else ever witnessed that phenomena?

Thanks, in advance, for the feedback.

p.s.: Happy Friday.

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Old 11-15-2013, 09:22 AM   #2
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You should be able to reach back behind your valve cover and feel for oil if it is leaking. If not it could be a rear main seal leaking, but I don't think either would end up on your skid plate. I believe that they would show up where your engine and tranny meet.

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Old 11-15-2013, 03:16 PM   #3
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Mine was coming out the oil cap. It would drip and air would carry it everywhere. It was coming off the starter, where the trans/engine marry, then off the skid plate. The valve cover had been replaced and once I stopped after driving you could see it running down the cover. New oil Cap with felpro gasket added and new vacuum lines fixed it.
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Old 11-15-2013, 06:08 PM   #4
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Take it to a power car wash and clean the undercarriage and engine really well. Then run it a short distance and then crawl underneath and start looking. A bad valve cover gasket will cause what you are seeing but so will a bad rear main so best to clean it good and have a look.
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Old 11-15-2013, 09:12 PM   #5
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Run it and park it out a clean piece if cardboard under let it leak. Then determine what kind of fluid.

Keep in mind gravity and airflow play a part in where it finally drips to the ground.

Common YJ leaks: valve cover, dipstick tube, distributor, rear main seal, oil cap, and some get oil into the air filter blow by from crappy hoses and PCV/CCV problems.
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Old 11-15-2013, 10:08 PM   #6
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Also check the vent tube going in to the transmission. Mine was out, mud in the tranny, and oil all over the transmission.
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Old 01-06-2014, 07:41 PM   #7
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Quote:
Originally Posted by jokerchief462 View Post
Run it and park it out a clean piece if cardboard under let it leak. Then determine what kind of fluid.

Keep in mind gravity and airflow play a part in where it finally drips to the ground.

Common YJ leaks: valve cover, dipstick tube, distributor, rear main seal, oil cap, and some get oil into the air filter blow by from crappy hoses and PCV/CCV problems.
I dont have a leak, I have a spray. My battery cables and passenger side fender, starter, etc are getting oily. I think its coming from the dipstick tube. Is there an o ring or how do you fix it?
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Old 01-06-2014, 08:19 PM   #8
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No o- ring it is press in and has a formed stop so it gets to the right depth.

Mine sprayed too.

I unbolted it pulled it out cleaned up the block and tube.

Used some RTV on the outside let it get tacky and reinstalled.

To make sure it was properly seated I used a screw driver wide common and a hammer and tapped the formed stop carefully until it was seated.

No more leak.
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Old 01-06-2014, 10:12 PM   #9
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You can also buy an oil dye. Put it in the crank case and run it a bit. It will show up bright greenish/yellow. Shows up great under a black light. May not be necessary but...
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Old 01-11-2014, 09:11 AM   #10
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Not too long ago I replaced the plastic elbow at the back of the value cover. The one I used had a small hole, so I drilled as large a hole (about 3/8 inch) as possible in the elbow. Reinstalled it and more oil leak.
When I cleaned the CCV there was this plastic piece in the tube that connects to the front of the value cover. What is it for

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