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Home >> Hyundai >> 2007 >> Elantra SE, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System (G4GC-GSL 2.0) >> DTC Troubleshooting Procedures >> DTC P0300 Random/Multiple Cylinder Misfire Detected >> System Inspection >> Ignition System Inspection
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Ignition System Inspection

  1. Spark Plug Cable & Ignition Coil Inspection
    1. Visually/physically inspect the spark plug cable and ignition coil related to the misfiring cylinders) for the following conditions
      • Damage, cracks, carbon and flashover
      • Poor connection or damaged harness
      • Connected to the incorrect cylinders at the ignition coil and spark plug
    2. Measure the resistance of the spark plug cable related to the misfiring cylinder (s)

      Specification : 5.6kΩ/m ± 20% at 20°C (68°F)

    3. Measure the resistance of the primary and secondary ignition coil related to the misfiring cylinder (s)

      Specification :

      Primary Ignition Coil Resistance : 0.58Ω ± 10% at 20°C (68°F)

      Secondary Ignition Coil Resistance : 8.8 kΩ ± 15% at 20°C (68°F)

    4. Was a problem found in any of the above areas?

      YES 

      NO 

      • Go to next step as below
  2. Spark Plug Inspection
    1. Visually/physically inspect the spark plug related to the misfiring cylinder (s) for the following conditions
      • Damaged insulation, Worn electrodes, Oil or fuel fouled, Loose terminals and cracks
      • Check for electrode gap : 1.0 -1.1 mm (0.039 - 0.043 in.)
      • Check if the spark plug for the relevant cylinder is lighter in color than the other plugs.
    2. Was a problem found in any of the above areas?

      YES 

      NO 

      • Go to next step as below