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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Chevy Truck
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1987
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G 20 Van V8-379 6.2L DSL
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Repair and Diagnosis
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Maintenance
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Tune-up and Engine Performance Checks
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Compression Check
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Specifications
Compression Check: Specifications
2068 kPa (300 psi).
Perform compression test with engine at normal operating temperature, glow plugs removed and throttle wide open.