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Home >> Geo >> 1989 >> Spectrum L4-91.5 1.5L >> Repair and Diagnosis >> Specifications >> Pressure, Vacuum and Temperature Specifications >> Compression Check

Compression Check

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The lowest reading cylinder should not be less than 65% of the highest and no cylinder reading should fall outside the range of 883-1234 kPa (128-179 psi). Perform compression test with engine at normal operating temperature, spark plugs removed and throttle wide open.