System Inspection

Air leakage check
1. Check "Air intake system"
  - Check looseness, deterioration or contamination on throttle body and gasket.
  - Check contamination, damage or crack on intake manifold, ISCA and injectors.
2. Is there any leakage?
  YES
  1. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure
  NO
  1. Go to " 2 Fuel line check" procedure.
Fuel line check
1. Check "Fuel line system"
  - Check looseness of connectors on fuel line.
  - Check looseness, damage, or interference of vacuum hose on fuel line.
  - Check damage, leakage or bending on fuel line pipe.
2. Is fuel line normal?
  YES
  1. Go to " 3 Fuel line pressure check" procedure.
  NO
  1. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure
Fuel line pressure check
1. Key "OFF".
2. Disconnect a fuel pump relay.
3. Engine start and wait until engine stop. and then key "OFF".
4. Connect a fuel pump relay.
5. Connect a fuel pressure gauge to a fuel filter by a fuel pressure gauge adaptor.
6. Engine start and measure a fuel pressure.
  1. Specification : Approx. 3.5 kg/cm² (343.2 kPa, 50 psi)
    
    Fig 1: Checking Fuel Line Pressure
    Courtesy of HYUNDAI MOTOR CO.
7. Is the fuel pressure normal?
  YES
  1. Go to "COMPONENT INSPECTION " procedure.
  NO
  1. Check clogging on the fuel filter.
    Check the supply pressure of fuel pump.
    
    Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure