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Quick question???? how much compression??

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Old Jun 12, 2009 | 01:21 PM
  #1  
sk8ertht540s's Avatar
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Year: 2001
Model: Cherokee
Engine: 4.0
Default Quick question???? how much compression??

i have a 2001 xj! Does anyone know what ball park my compression should be in???
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Old Jun 12, 2009 | 01:22 PM
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a1racer's Avatar
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From: socal
Year: 2000
Model: Cherokee
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hot or cold. for a good reading it should be warmed up first
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Old Jun 12, 2009 | 03:30 PM
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Model: Comanche (MJ)
Engine: 4.0 HO
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Mines around 125 psi
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Old Jun 13, 2009 | 12:26 PM
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98 JeepJeep's Avatar
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From: Stafford,VA
Year: 1998
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Engine: 4.0
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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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