System Inspection

Air clog check
1. Check "Air intake system"
  - Check clog of air-cleaner.
  - Check deterioration or contamination on throttle body and gasket.
  - Check contamination, damage, stuck or clog on intake manifold, PCSV, ISCA and injectors.
2. Is there any problem?
  YES
  1. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure
  NO
  1. Go to " 2 Fuel pressure check" procedure.
Fuel 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
    
    Fig 1: Checking Fuel Pressure
    Courtesy of HYUNDAI MOTOR CO.
7. Is the fuel pressure normal?
  YES
  1. Go to "COMPONENT INSPECTION " procedure.
  NO
  1. Check clog of the valve in a fuel pressure regulator. (If it has a problem, fuel happen to be leaked to a return line.)
    Check the supply pressure of fuel pump.
    
    Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure