Quick question???? how much compression??

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Jun 12, 2009 | 01:21 PM

sk8ertht540s

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Joined: Jun 2008

Posts: 388

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Year: 2001

Model: Cherokee

Engine: 4.0

Quick question???? how much compression??

i have a 2001 xj! Does anyone know what ball park my compression should be in???

Jun 12, 2009 | 01:22 PM

a1racer

CF Veteran

Joined: Feb 2009

Posts: 7,244

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From: socal

Year: 2000

Model: Cherokee

Engine: 4.0

hot or cold. for a good reading it should be warmed up first

Jun 12, 2009 | 03:30 PM

JeepingDan

CF Veteran

Joined: Apr 2009

Posts: 18,786

Likes: 14

From: CT.

Year: 88

Model: Comanche (MJ)

Engine: 4.0 HO

Mines around 125 psi

Jun 13, 2009 | 12:26 PM

98 JeepJeep

CF Veteran

Joined: Oct 2008

Posts: 2,543

Likes: 5

From: Stafford,VA

Year: 1998

Model: Cherokee

Engine: 4.0

above 100psi would be considered "good" but the most important thing is that all the numbers are 10-15% of each other.

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