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Unread 05-27-2013, 12:09 PM   #1
Dirt_Baller
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1992 YJ Wrangler 
 
Join Date: May 2013
Location: Fort Campbell, Kentucky
Posts: 6
Compression for a 92 YJ 2.5

I just pick this jeep up and have some smoke coming from the tail pipe. I did a compression check today (I am not sure if i did it right). It has 275k on it.

If somebody can help me out and let me know if these look good, I would greatly appreciate it. Below are the compression numbers and this was done dry.

#1-125
#2-122
#3-119
#4-121

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Unread 05-27-2013, 01:14 PM   #2
Michaelgoesrawr
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1988 YJ Wrangler 
 
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Quote:
Originally Posted by Dirt_Baller
I just pick this jeep up and have some smoke coming from the tail pipe. I did a compression check today (I am not sure if i did it right). It has 275k on it.

If somebody can help me out and let me know if these look good, I would greatly appreciate it. Below are the compression numbers and this was done dry.

#1-125
#2-122
#3-119
#4-121
I'd say that those numbers are fine. They are close enough together not to cause a problem. *note: I'm not an engine builder, I'm just conveying what i think based on what I've read and remember* What is the color of the smoke?
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Unread 05-27-2013, 02:18 PM   #3
jokerchief462
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1989 YJ Wrangler 
 
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The smoke is from old age. Compression on a new engine is 150 for a 2.5L. Your getting some bypass on the rings and some from the valve guides. I would run it until It quits but have plans for a swap or overhaul. Enjoy it it's running.
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Unread 05-27-2013, 02:19 PM   #4
Dirt_Baller
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1992 YJ Wrangler 
 
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Location: Fort Campbell, Kentucky
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Thanks for the info. its Whitish/Blueish smoke. I was think of replacing the head and head gasket.
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Unread 05-27-2013, 02:25 PM   #5
Dirt_Baller
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1992 YJ Wrangler 
 
Join Date: May 2013
Location: Fort Campbell, Kentucky
Posts: 6
Thanks for the info! I hope to drive it for a couple of years before having to anything else to it.
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