post #1 of Old 04-24-2001, 03:53 AM Thread Starter
BigWillis91YJ
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Join Date: Apr 2001
Location: East Lansing, Michigan
Posts: 4
Hello Fellas..... Need a little help!!!!

This is my first time writing but I get lots of greta ideas from the board. Well here's my predicament. Have a 91 YJ (if you couldn't tell from my username) with the 4.0 and I am getting blowby. In other words I am getting engine oil in my k&n filter and it kinda bothers me. I have a small amount of oil deposit on my exhaust tip as well... but no smoke. No considerable loss of oil in the crankcase but still about a cup of oil every coupla weeks in the air filter housing. Now comes the wierd part. The compression is perfect and she runs like a charm. No hesitation, no nothing, if you ask my baby she'll tell you for all she knows it is still 1991 and she only has 1900 miles. But in reality it is 2001 and she's ammassed 90000 miles. Any help would be appreciated. Oh yeah, I talked to a chysler tech and he mentioned something about a quart of transmission fluid in the crankcase with an oilchange will help to remove sediment from the valve cover and cure any plugs, never heard this before and am a little skeptical. Well thanks in advance for the help.... Spring fever is in full effect and I am ready to get rollin!!!!!

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post #2 of Old 04-24-2001, 12:27 PM
Tonka
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2015 JK Wrangler 
 
Join Date: Mar 2001
Location: Waterford, MI.
Posts: 361
1. Replace your vaccuumlines that run to the valve cover.
2. Pull the valve cover, remove the breather tubes, clean everything, and re-install.
This should help,it fixed mine completely.

98 TJ
90 MJ short bed converted to 4x4
90 XJ 2 dr 4x4
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post #3 of Old 04-27-2001, 04:02 PM
Tonka
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Join Date: Mar 2001
Location: Waterford, MI.
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any luck?

98 TJ
90 MJ short bed converted to 4x4
90 XJ 2 dr 4x4
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post #4 of Old 04-27-2001, 05:19 PM Thread Starter
BigWillis91YJ
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Location: East Lansing, Michigan
Posts: 4
Waitin for the weekend... I'll get back to you. Thanks again Bud
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post #5 of Old 04-30-2001, 12:59 PM
jeromy
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Join Date: Apr 2001
Posts: 11
about the transmission fluid.IT WORKS
It really cleans the dirt out.
Back in the day they used kerosine,but tranny fluid is way better.That's all a lot of the engine cleaners are,but way overpriced
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post #6 of Old 05-07-2001, 08:58 PM
ChevyYJ
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Join Date: May 2001
Location: WhiteRock,BC,Canada
Posts: 3
Maybe you need a new head gasket? Probably not since you have good compression. Id try a lot of other things before taking 1 full day to change a head gasket!

I just thought I would bring up Head Gasket so you have another thing to add to your list heh. Later!
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post #7 of Old 05-22-2001, 03:14 PM
yjjay
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Join Date: May 2001
Location: pa
Posts: 4
about that trans fluid in the oil you just add 1 quart and change it in 3000 again or what? e-mail me thanks

95 yj rio grande
2-inch lift
30-inch sport kings
4-banger
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