Hyundai Sonata: Exhaust Manifold. Repair procedures - Intake And Exhaust System - Engine Mechanical System - Hyundai Sonata YF 2011-2019 Service ManualHyundai Sonata: 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.
ULEV : Disconnect the front oxygen sensor connector (A).

SULEV : Disconnect the front oxygen sensor connector (A) and the rear oxygen sensor connector (B).
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.
ULEV : Remove the exhaust manifold heat protector (A).
Tightening torque :
7.8 ~ 11.8N.m (0.8 ~ 1.2kgf.m, 5.8 ~ 8.7lb-ft)

SULEV : Using the SST (09392-2H100) (A), remove the front oxygen sensor (B) and the remove the exhaust manifold heat protector (C).
Tightening torque
Oxygen sensor:
39.2~ 49.0N.m (4.0 ~ 5.0kgf.m, 28.9 ~ 36.2lb-ft)
Heat protector bolts:
7.8 ~ 11.8N.m (0.8 ~ 1.2kgf.m, 5.8 ~ 8.7lb-ft)

6.
Remove the driveshaft heat protector (A).
7.
Remove the exhaust manifold stay (A).
Tightening torque :
M8 :18.6 ~ 27.5N.m (1.9 ~ 2.8kgf.m, 13.7 ~ 20.3lb-ft)
M10 : 51.9 ~ 57.8.m (5.3 ~ 5.9kgf.m, 38.3 ~ 42.6lb-ft)
[ULEV]

[SULEV]
8.
Remove the exhaust manifold (A) with the gasket (B).
Tightening torque
49.0 ~ 53.9N.m (5.0 ~ 5.5kgf.m, 36.2 ~ 39.7lb-ft)
[ULEV]

[SULEV]

When installing, replace with a new gasket.
When installing the intake manifold, tighten the nuts with pre-torque first, and then tighten the nuts with specified torque in the sequence shown.
[ULEV]

[SULEV]
9.
Installation is reverse order of removal.

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