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Home >> Hyundai >> 2005 >> Elantra GLS, 4D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System >> DTC Troubleshooting Procedures >> DTC P0300: Random/Multiple Cylinder Misfire Detected >> Fuel Injector Inspection
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Fuel Injector Inspection

  1. Check the fuel injectors for clogging or any restrictions

    Test Condition : Ignition "OFF"

    Specification : No clogging and restriction

  2. Is the fuel injector OK?

    YES 

    • Visually/physically inspect the engine mechanical problem as below:
    • Leaky or sticky valves or rings
    • Excessive valve deposits
    • Weak valve spring
    • Leaking head gasket

    If NG, repair as necessary and go to VERIFICATION OF VEHICLE REPAIR  procedure If OK, go to IGNITION COIL INSPECTION  procedure

    NO