Bad Compression

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Dec 1, 2009 | 02:59 PM

#16

98 JeepJeep

CF Veteran

Joined: Oct 2008

Posts: 2,543

Likes: 5

From: Stafford,VA

Year: 1998

Model: Cherokee

Engine: 4.0

i find it hard to believe you have rings shot in 1 cylinder.......not impossible just not common.. my bet is you have a valve issue or cracked cylinder head...why not remove it and look around?

Dec 1, 2009 | 03:10 PM

#17

Camrynz

Thread Starter

Member

Joined: Aug 2009

Posts: 213

Likes: 0

Year: 1987

Model: Cherokee

Engine: 4.0

what would i be looking for? the compression in cyl1 was 75 and cyl4 was 25 the rest 110,150

Dec 31, 2009 | 08:21 PM

#18

00xj-classic

Member

Joined: Nov 2009

Posts: 189

Likes: 3

Year: 2000

Model: Cherokee

Engine: 4.0 I6

my 93 country had the same problem.. I had low compression in #1 cyl, 50 psi.. all the rest were around 120 psi.. I drove the jeep about 350 miles away and got back and the thing is runnin way better.. my jeep was idleing poorly and stumbling and just had a very large power loss.. I think the long drive cleared up some of my sticky and carboned up vales... now my compression is good in all cyl... and she runs as good as my 00 xj...