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Home >> Kia >> 2017 >> Optima SX >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Intake And Exhaust System - 2.0L (Except HEV) >> Turbocharger, Exhaust Manifold And Catalytic Converter >> Repair Procedures >> Removal and Installation

Removal and Installation

  1. Remove the engine cover.

    (Refer to Engine and Transaxle Assembly - "ENGINE COVER ")

  2. Disconnect the battery negative terminal.
  3. Remove the air cleaner.

    (Refer to Intake and Exhaust System - "Air Cleaner ")

  4. Remove the intercooler inlet pipe & hose assembly.

    (Refer to Intake and Exhaust System - "Intercooler ")

  5. Disconnect the oxygen sensor connectors (A).
    Fig 1: Disconnecting Oxygen Sensor Connectors
    G12145356Courtesy of KIA MOTORS AMERICA, INC.
  6. Remove the exhaust upper heat protector bolt (A).

    Tightening torque: 

    7.8-11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb.ft)

    Fig 2: Removing Exhaust Upper Heat Protector Bolt
    G12145357Courtesy of KIA MOTORS AMERICA, INC.
    CAUTION: Check that engine is cool enough to work.
  7. Remove the turbocharger heat protector (A).

    Tightening torque: 

    7.8 - 11.8 N.m (0.8 -1.2 kgf.m, 5.8 - 8.7 lb.ft)

    Fig 3: Removing Turbocharger Heat Protector
    G12145358Courtesy of KIA MOTORS AMERICA, INC.
  8. Remove the heated oxygen sensor from the warm-up catalytic converter (WCC).

    (Refer to Engine Control/Fuel System - "HEATED OXYGEN SENSOR (HO2S) ")

  9. Remove the warm-up catalytic converter (WCC) heat protector (A).

    Tightening torque: 

    18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb.ft)

    Fig 4: Removing Heated Oxygen Sensor From Warm-Up Catalytic Converter
    G12145359Courtesy of KIA MOTORS AMERICA, INC.
  10. Remove the front muffler.

    (Refer to Intake and Exhaust System - "Muffler ")

  11. Remove the warm-up catalytic converter (WCC) bracket (A).

    Tightening torque: 

    Bolts (B):

    18.6 - 27.5 N.m (1.9 - 2.8 kgf.m, 13.7 - 20.3 lb.ft)

    Bolts (C):

    52.0 - 57.9 N.m (5.3 - 5.9 kgf.m, 38.3 - 42.7 lb.ft)

    Fig 5: Removing Warm-Up Catalytic Converter (WCC) Bracket
    G12145360Courtesy of KIA MOTORS AMERICA, INC.
  12. Remove the warm-up catalytic converter (WCC) (A) and gasket.

    Tightening torque: 

    49.0 - 53.9 N.m (5.0 - 5.5 kgf.m, 36.2 - 39.7 lb.ft)

    Fig 6: Removing Warm-Up Catalytic Converter And Gasket
    G12145361Courtesy of KIA MOTORS AMERICA, INC.
  13. Remove the driveshaft mounting bracket (A).

    Tightening torque: 

    49.0 - 63.7 N.m (5.0 - 6.5 kgf.m, 36.2 - 47.0 lb.ft)

    Fig 7: Removing Driveshaft Mounting Bracket
    G12145362Courtesy of KIA MOTORS AMERICA, INC.
  14. Disconnect the oil drain pipe (A), and then remove the oil feed pipe (B).

    Tightening torque 

    Bolts & Nuts:

    7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb.ft)

    Eye bolt:

    11.8 - 17.6 N.m (1.2 - 1.8 kgf.m, 8.7 - 41.1 lb.ft)

    Fig 8: Disconnecting Oil Drain Pipe
    G12145363Courtesy of KIA MOTORS AMERICA, INC.
    NOTE:
    • When installing the oil feed pipe & hose, make sure the stopper (A) don't touch the compressor housing.
    • Be careful not to bend or crush the pipe & hose.
    • When installing, be sure the eye bolt o-rings are completely seated in both hole of oil feed pipe.
    • When installing, clean the gasket surface and replace the oil drain pipe gasket with new one.
    Fig 9: Installing Oil Feed Pipe & Hose
    G12145364Courtesy of KIA MOTORS AMERICA, INC.
  15. Remove the turbocharger water drain hose (A), and then remove the lower heat protector (B).

    Tightening torque: 

    7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb.ft)

    Fig 10: Removing Turbocharger Water Drain Hose
    G12145365Courtesy of KIA MOTORS AMERICA, INC.
  16. Disconnect the turbocharger water feed hose (A) and the electric waste gate actuator (EWGA) connector (B).
    Fig 11: Disconnecting Turbocharger Water Feed Hose And Electric Waste Gate Actuator (EWGA) Connector
    G12145366Courtesy of KIA MOTORS AMERICA, INC.
  17. Remove the turbo manifold module.

    Tightening torque: 

    49.0 - 53.9 N.m (5.0 - 5.5 kgf.m, 36.2 - 39.7 lb.ft)

    Fig 12: Removing Turbo Manifold Module (1 Of 2)
    G12145367Courtesy of KIA MOTORS AMERICA, INC.
    Fig 13: Removing Turbo Manifold Module (2 Of 2)
    G12145368Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: When installing, replace with a new gasket. When installing the turbo manifold module, tighten the nuts with pre-torque first, and then tighten the nuts with specified torque in the sequence shown.
    Fig 14: Exhaust Manifold Nuts Tightening Sequence
    G12145369Courtesy of KIA MOTORS AMERICA, INC.
  18. Remove the turbo charger manifold gasket (A).
    Fig 15: Removing Turbo Charger Manifold Gasket
    G12145370Courtesy of KIA MOTORS AMERICA, INC.
  19. Remove the exhaust upper heat protector (A).

    Tightening torque: 

    7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb.ft)

    Fig 16: Removing Exhaust Upper Heat Protector
    G12145371Courtesy of KIA MOTORS AMERICA, INC.
  20. Remove the water feed pipe (A) and drain pipe (B).

    Tightening torque: 

    26.5 - 32.4 N.m (2.7 - 3.3 kgf.m, 19.5 - 23.7 lb.ft)

    Fig 17: Removing Water Feed Pipe And Drain Pipe
    G12145372Courtesy of KIA MOTORS AMERICA, INC.
  21. Install in the reverse order of removal.
    NOTE:
    • Always use the new turbo manifold module and turbo adapter gaskets when replacing.
    • Take care whether the oil feed pipe & hose assembly is interfered with turbo manifold module and any surrounding parts.
    • If the oil feed pipe & hose is damaged, engine oil is not supplied sufficiently to the turbocharger then it may damage the turbocharger. If the oil drain pipe & hose is damaged and clogged, engine oil is not drained smoothly then it may cause oil leaks from the turbocharger. Be careful the oil feed pipe & hose not to damage.(bent, crushed, torn or cracked).