Jeep TJ 4.0 Leak - JeepForum.com
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post #1 of 24 Old 05-24-2012, 08:12 AM Thread Starter
mbporesky
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Jeep TJ 4.0 Leak

Hi
My TJ has had a leak for a while. not a horrible one but it will leave its dime spot if left overnight. I replaced the valve cover gasket which didnt really solve anything. Then i changed the Rear main seal. This stopped it for awhile. Now after a 100 mile or so of driving i get oil on the bottem of the bellhouseing of the trans. Its black oil from the 4.0. It seams like it drips down from the back of the engine. The valve cover doesnt seem to be leaking. Maybe just some residue i can feel. I looked further and it seems like its coming from the rear part of the pan
What can I do?
Thanks
Mike

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post #2 of 24 Old 05-24-2012, 08:37 AM
angelo2975
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add oil tracer dye, drive it for a day or so , then use a UV light to find where the oil and dye are leaking.
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post #3 of 24 Old 05-24-2012, 10:05 AM
extsp2
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X2 on tracer dye.

"Even duct tape can't fix Stupid"-Ron White
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post #4 of 24 Old 05-24-2012, 10:15 AM
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Quote:
Originally Posted by extsp2
X2 on tracer dye.
TIL there is a such thing as tracer dye
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post #5 of 24 Old 05-24-2012, 10:24 AM
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TIL there is a such thing as tracer dye
http://www.amazon.com/Tracer-Product.../dp/B000JFHNTM
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post #6 of 24 Old 05-24-2012, 11:57 AM
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Originally Posted by xj539 View Post
TIL there is a such thing as tracer dye
What does this mean?

"Even duct tape can't fix Stupid"-Ron White
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post #7 of 24 Old 05-24-2012, 12:08 PM
TheBoogieman
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RMS is leaking again.Put 1/2 bottle of brake fluid in the engine oil and see if it goes away in a few days.I've fixed three RMS leaks with brake fluid.My newest 98' had one that I fixed over a month ago by doing that.

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TheBoogieman is a jerk.
03' Rubicon/Zone 4" coils with 1" spacers up front/Rancho shocks/5.13 gears-35" MTZs/BM brakes
99' XJ / 5" lift / Rancho shocks/33" DC Extreme country MTs. Jeep #18
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post #8 of 24 Old 05-24-2012, 12:08 PM
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RMS is leaking again.
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post #9 of 24 Old 05-24-2012, 12:19 PM
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Quote:
Originally Posted by TheBoogieman
RMS is leaking again.Put 1/2 bottle of brake fluid in the engine oil and see if it goes away in a few days.I've fixed three RMS leaks with brake fluid.My newest 98' had one that I fixed over a month ago by doing that.
Really? This won't screw anything up in the engine? I may have to try this as well.
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post #10 of 24 Old 05-24-2012, 12:23 PM
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Really? This won't screw anything up in the engine? I may have to try this as well.
Really, what is there to screw up?
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post #11 of 24 Old 05-24-2012, 12:37 PM
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Quote:
Originally Posted by JBTJ

Really, what is there to screw up?
I don't know that's why I'm asking lol
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post #12 of 24 Old 05-24-2012, 12:39 PM
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Quote:
Originally Posted by extsp2

What does this mean?
TIL. (Today I learned)
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post #13 of 24 Old 05-24-2012, 12:39 PM
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I don't know that's why I'm asking lol
Nothing at all.
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post #14 of 24 Old 05-24-2012, 12:42 PM
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"Even duct tape can't fix Stupid"-Ron White
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post #15 of 24 Old 05-24-2012, 12:45 PM
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Quote:
Originally Posted by xj539 View Post
TIL. (Today I learned)
TIL ....what TIL means
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