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Engine Compression

  1. Warm engine to normal operating temperature. Remove all spark plugs. Disconnect ignition coil primary wire connector.
  2. Hold throttle plate fully open. Crank engine, and note compression pressure.
COMPRESSION RATIO

Application Specification
MX-6
2.0L 9.0:1
2.5L 9.2:1
626
2.0L 9.0:1
2.5L 9.2:1
COMPRESSION SPECIFICATIONS

Application Minimum psi (kg/cm2 ) @ RPM Standard psi (kg/cm2 ) @ RPM
2.0L 119 (8.4) @ 300 171 (12.0) @ 300
2.5L 142 (10.0) @ 250 203 (14.3) @ 250
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