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Home >> Genesis >> 2021 >> G90 5.0 Ultimate, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 30 (Engine Control System Diagnosis - 3.3L (5 Of 9)) >> DTC P03AF-00: Cylinder 3 Pressure Too High >> System Inspection >> Spark Plug Inspection

Spark Plug Inspection

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  1. Remove cylinder's spark plugs
  2. Visually/physically inspect the following items:
    • Damaged insulation, Worn electrodes, Oil or fuel fouled, Loose terminals and cracks.
    • Check for plug gap: 0.7 ~ 0.8 mm (0.028 ~ 0.031 in.)
    • Check if the spark plug for the relevant cylinder is lighter in color than the other plugs.
  3. Has a problem been found in any of the above areas?

    YES 

    NO 

    • Go to next step as below.