System Inspection

■ Check leakage or clog of air 

1. Check contamination, clog and installation of gasket.
   • Any damage or installation of throttle body gasket.
   • Any damage or installation of gasket between intake manifold and surge tank.
   • Clog or contamination of intake manifold and injector by foreign materials.
   • Contamination and open stuck between surge tank and PCSV by foreign materials.
   • Any damage or contamination of HO2S (S1) by foreign materials.
2. Has a problem been found?

   YES 

   • Go to "Check Fuel Line" as follows below.

   NO 

   • Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Check Fuel Line 

1. Check Clog, contamination and installation of Fuel Line as follows below.

• Connection for each connectors in Fuel Line.
• Damage, interference and installation of vacuum hose connected to Fuel Line.
• Bend, Leakage and squeeze of pipe in Fuel Line.

YES 

• Go to "Check Fuel Pressure" as follows below.

NO 

• Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Check Fuel Pressure 

1. IG KEY "OFF".
2. Connect fuel pressure gauge on the fuel filter with fuel pressure gauge adaptor.
3. Start engine again and measure fuel pressure.

   Specification:  495 ~ 505 kPa (4.9 ~ 5.1 kgf/cm² , 71.8 ~ 73.2 psi)

4. Is the fuel pressure normal?

   YES 

   • Go to "COMPONENT INSPECTION " procedure.

   NO 

   • Check any damage of fuel return hose or pipe.
   • Check any stuck of the valve in the fuel pressure regulator.
   • Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.