FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
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Car repair manuals for everyone.
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Hummer
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2010
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H3 V8-5.3L
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Tune-up and Engine Performance Checks
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Compression Check
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Specifications
Compression Check: Specifications
No cylinder should read less than
690 kPa (100 psi).
The minimum compression in any 1 cylinder should not be less than 70 percent of the highest cylinder.