Haelp!?! Smoking like a chimney!

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Oct 7, 2014 | 02:13 PM

#16

djb383

CF Veteran

Joined: Nov 2009

Posts: 8,172

Likes: 17

From: The Republic of TEXAS

Year: 1998

Model: Cherokee

Engine: 4.0L HO

Quote:

Originally Posted by Thuraen

......if there where leakage from the rings it would have shown on the compression test.......

Not necessarily.....it depends on how u did the compression test. After the initial (I presume dry) test, u add a tbsp of oil to each cylinder thru the spark plug hole and re-test. If numbers stay about the same, rings r decent. If numbers jump up, (oil sealing bad rings) rings might not be so good.

Last edited by djb383; Oct 7, 2014 at 02:15 PM.

Oct 7, 2014 | 02:15 PM

#17

mentalbreakdown00

CF Veteran

Joined: Jan 2011

Posts: 1,648

Likes: 0

From: Havana fl

Year: 1995

Model: Cherokee

Engine: 4.0L

Yes you can also have bad oil control rings, and good compression causing it to burn oil, but have good compression, seen it before...

Oct 15, 2014 | 12:06 AM

#18

Thuraen

Thread Starter

Newbie

Joined: Oct 2014

Posts: 6

Likes: 0

From: Nevada

Year: 1993

Model: Cherokee

Engine: 4.0L High Output

Lookin like its the valve stem seals after sitting 5 min little bit of smoke hour smokes for like 15-20 min relative to time sitting so imma end up buying that 4.2 and build the motor thats in it thanks everybody for the help if not the valve seals ill update with the specifics and a build thread
-Thanks all