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Home >> Hyundai >> 2007 >> Tiburon SE >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System (G6BA-GSL 2.7L) >> DTC Troubleshooting Procedures >> DTC P0300 Random/Multiple Cylinder Misfire Detected >> Fuel System Inspection
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Fuel System Inspection

  1. Check the fuel for excessive water, alcohol, or other contaminants. Replace contaminated fuel as necessary.
  2. Install a fuel pressure gauge.
  3. Start engine and let it idle. Inspect fuel pressure with vacuum hose disconnected.

    Test Condition: Engine "ON" at Idle.

    Specification: 330~350kPa (3.30~3.50 kg/cm2 , 47~50 psi).

  4. Is fuel pressure within the specification?

    YES: 

    • Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO: