2011 Kia Rio BaseFACTORY OEM SERVICE PROCEDURE

System Inspection

  1. 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 between surge tank and PCSV or stuck open condition of PCSV.

      Any damage or contamination of HO2S (B1/S1) by foreign materials.

    2. Has a problem been found?

      YES

      1. Go to " 2 Check Fuel Line" as follows.

      NO

      1. Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  2. Check Fuel Line
    1. Check Clog, contamination and installation of Fuel Line as follows.

      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.

    2. Has a problem been found?

      YES

      1. Go to " 3 Check Fuel Pressure" as follows.

      NO

      1. Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  3. Check Fuel Pressure.
    1. IG "OFF".
    2. Disconnect fuel pump relay from junction box in passenger compartment.
    3. Start engine and await until engine is off and then, IG "OFF"
    4. Connect fuel pump relay again.
    5. Connect fuel pressure gauge on the fuel filter with fuel pressure gauge adaptor.
    6. Start engine again and measure fuel pressure.
      1. Specification : Approx. 3.5kg/cm2
        Fig 1: Checking Fuel Pressure
        G06830545Courtesy of KIA MOTORS AMERICA, INC.
    7. Is the fuel pressure normal?

      YES

      1. Go to "COMPONENT INSPECTION " procedure.

      NO

      1. Check any damage of fuel return hose or pipe.

        Check for improper fuel pressure regulator operation.

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

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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