Kia Optima: Exhaust Manifold. Repair procedures - Intake And Exhaust System - Engine Mechanical System - Kia Optima TF 2011-2020 Service ManualKia Optima: Exhaust Manifold. Repair procedures

Removal and Installation

1. Remove the engine cover.
2. Disconnect the battery negative terminal.

Tightening torque

4.0 ~ 6.0N.m (0.4 ~ 0.6kgf.m, 3.0 ~ 4.4lb-ft)


3. Disconnect the oxygen sensor connector (A) and then remove the exhaust manifold heat protectors (B).

Tightening torque :

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


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)


5. Remove the sub frame (A). (Refer to SS group)

6. Disconnect the turbocharger water feed hose (A) and the water darin hose (B).

7. Remove the turbocharger stay (A) and then disconnect the oil drain pipe (B) and gasket.

Tightening torque :

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

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

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


When installing, clean the gasket surface and replace the oil drain pipe gasket with new one.
8. Disconnect the oil feed pipe (A) and tnen remove the turbo manifold module (B).

Tightening torque

Oil feed pipe eye bolt:

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

Turbo manifold module nuts:

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

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, 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.

9. Remove the turbo manifold module gasket (A).

10. Installation is reverse order of removal.
Х Always use the new turbo manifold module and turbo adapter gaskets when replacing.
Х Always use a new turbocharger nuts and, exhaust manifold nuts when it is removed.
Х Take care whether the oil feed pipe & hose assembly is interfered with turbo manifold module and any surrounding parts.
Х 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 care ful the oil feed pipe & hose not to damage.(bent, crushed, torn or cracked).

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