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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System >> DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308: No. 8 - 1 Cylinder Misfire, Multiple Cylinder Misfire >> Diagnostic Procedure >> 7. Check Compression Pressure

7. Check Compression Pressure

Check compression pressure. Refer to CHECKING COMPRESSION PRESSURE .

Standard: 1,320 kPa  (13.5 kg/cm2 , 191 psi)/300 RPM

Minimum: 1,130 kPa  (11.5 kg/cm2 , 164 psi)/300 RPM

Difference between each cylinder: 98 kPa  (1.0 kg/cm2 , 14 psi)/300 RPM

OK or NG 

  1. OK: GO TO 8.
  2. NG: Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
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