subaru Workshop Repair Guides

Subaru Workshop Service and Repair Manuals

Compression Check|Specifications|Page 1365 > < Spark Plug|Removal and Installation|Page 1361
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Compression Check: Specifications

Compression Inspection

Note: Do measurement after warming-up engine, ignition switch off. 

Standard ......................................................................................................................................................................  1,275 kPa (13.0 kgf/cm2), 185 psi)
Limit ............................................................................................................................................................................  1,020 kPa (10.4 kgf/cm2, 148 psi)
Difference between cylinders .....................................................................................................................................  49 kPa (0.5 kgf/cm2, 7 psi), or less

Note: Crank engine rpm to 350 rpm at wide open throttle. Take at least two measurements per cylinder, and make sure that the values are correct.

Compression Check|Specifications|Page 1365 > < Spark Plug|Removal and Installation|Page 1361