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Home >> Kia >> 2014 >> Optima Limited >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Intake & Exhaust System - 2.0L - Optima >> Exhaust Manifold >> Repair Procedures >> Removal And Installation

Removal And Installation

  1. Remove the engine cover (A).
    Fig 1: Identifying Engine Cover
    G00548589Courtesy of KIA MOTORS AMERICA, INC.
  2. Disconnect the battery negative terminal.
  3. Disconnect the oxygen sensor connector (A) and then remove the exhaust manifold heat protectors (B).

    Tightening torque: 

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

    Fig 2: Oxygen Sensor Connector & Exhaust Manifold Heat Protectors
    G07385613Courtesy of KIA MOTORS AMERICA, INC.
    CAUTION: Check that engine is cool enough to work.
  4. Remove the front muffler (A).

    Tightening torque: 

    39.2 ~ 58.8 N.m (4.0 ~ 6.0 kgf.m, 28.9 ~ 43.4 lb-ft)

    Fig 3: Front Muffler
    G07385614Courtesy of KIA MOTORS AMERICA, INC.
  5. Remove the sub frame (A). Refer to FRONT CROSS MEMBER .
    Fig 4: Sub Frame
    G07385615Courtesy of KIA MOTORS AMERICA, INC.
  6. Disconnect the turbocharger water feed hose (A) and the water drain hose (B).
    Fig 5: Turbocharger Water Feed Hose & Water Drain Hose
    G07385616Courtesy of KIA MOTORS AMERICA, INC.
  7. Remove the turbocharger stay (A) and then disconnect the oil drain pipe (B) and gasket.

    Tightening torque: 

    Bolts (C) : 49.0 ~ 53.9 N.m (5.0 ~ 5.5kgf.m, 36.2 ~ 39.8 lb-ft)

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

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

    Fig 6: Turbocharger Stay & Oil Drain Pipe
    G07385617Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: When installing, clean the gasket surface and replace the oil drain pipe gasket with new one.
  8. Disconnect the oil feed pipe (A) and then remove the turbo manifold module (B).

    Tightening torque 

    Oil feed pipe eye bolt:

    11.8 ~ 17.7 N.m (1.2 ~ 1.8kgf.m, 8.7 ~ 13.0 lb-ft)

    Turbo manifold module nuts:

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

    Fig 7: Identifying Oil Feed Pipe & Turbo Manifold Module
    G07385618Courtesy of KIA MOTORS AMERICA, INC.
    CAUTION: 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.
    Fig 8: Oil Feed Pipe Stopper
    G00510087Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: When installing, be sure the eye bolt o-rings are completely seated in both hole of oil feed pipe.
    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 in Fig 9.

    Fig 9: Exhaust Manifold Nuts Tightening Sequence
    G07385619Courtesy of KIA MOTORS AMERICA, INC.
  9. Remove the turbo manifold module gasket (A).
    Fig 10: Turbo Manifold Module Gasket
    G07385620Courtesy of KIA MOTORS AMERICA, INC.
  10. Installation is reverse order of removal.
    NOTE:
    • Always use the new turbo manifold module and turbo adapter gaskets when replacing.
    • Always use a new turbocharger nuts and, exhaust manifold nuts when it is removed.
    • 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 not to damage the oil feed pipe & hose. (bent, crushed, torn or cracked).