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Engine Mechanical: Compression

Compression is checked at engine speed of 250-400 RPM. Measure the compression pressure for all the cylinders, and check that the pressure differences of the cylinders are below the limit shown in table.

ENGINE COMPRESSION SPECIFICATIONS

Engine Specification
  2.4L
    Compression Ratio 9.5:1
    Standard Value 185 psi (1275 kPa)
    Minimum Limit 139 psi (959 kPa)
    Limit 14 psi (98 kPa)
  3.0L
    Compression Ratio 8.9:1
    Standard Value 119 psi (824 kPa)
    Minimum Limit 83 psi (575 kPa)
    Limit 14 psi (98 kPa)