ford Workshop Repair Guides

Ford Workshop Service and Repair Manuals

Compression Check|Specifications|Page 1171 > < Vehicle - Towing Precautions
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Compression Check: Specifications

Compression Pressure Limit Chart

Compression pressures are considered within specification if the lowest reading cylinder is within 25 percent of the highest reading cylinder.

NOTE:  Variations exceeding 25 percent indicate an improperly seated valve or worn/broken piston rings.

Compression Check|Specifications|Page 1171 > < Vehicle - Towing Precautions