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Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308: No. 1 - 8 Cylinder Misfire, Multiple Cylinder Misfire >> Diagnostic Procedure >> 2. Check For Exhaust System Clogging

2. Check For Exhaust System Clogging

  1. Stop engine
  2. Turn ignition switch OFF
  3. Visually check exhaust tube, three way catalyst (manifold) and muffler for dents.

OK or NG 

OK: GO TO 3.

NG: Repair or replace it.

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