Hyundai Ioniq: Intake and Exhaust System / Exhaust Manifold. Repair procedures

Hyundai Ioniq (AE) 2017-2025 Service Manual / Engine Mechanical System / Intake and Exhaust System / Exhaust Manifold. Repair procedures

Removal and Installation
1.
Disconnect the battery negative terminal.
2.
Remove the air cleaner assembly.
(Refer to Intake and Exhaust System - "Air Cleaner")
3.
Remove the engine room under cover.
(Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")
4.
Remove the front muffler.
(Refer to Intake and Exhaust System - "Muffler")
5.
Remove the engine mounting support bracket.
(Refer to Engine and Transaxle Assembly - "Engine Mounting")
6.
Disconnect the oxygen sensor connector (A) from the connector bracket and then remove the heat protector (B).
Tightening torque :
9.8 - 11.8N.m (1.0 - 1.2kgf.m, 7.2 - 8.7lb-ft)

7.
Remove the exhaust manifold stay (A).
Tightening torque :
39.2 - 49.0 N.m (4.0 - 5.0 kgf.m, 28.9 - 36.2 lb-ft)

8.
Remove the EGR cooler pipe A bolts (A).
Tightening torque :
18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb-ft)

9.
Remove the exhaust manifold (A).
Tightening torque :
34.3 - 39.2 N.m (3.5 - 4.0 kgf.m, 25.3 - 28.9 lb-ft)

10.
Remove the exhaust manifold gasket (A).

   
•
When installing, replace with new gaskets.
   
•
When installing the exhaust manifold, tighten the nuts with pre-torque first, and then tighten the nuts with pecified torque in the sequence shown.

11.
Install in the reverse order of removal.

    Exhaust Manifold. Components and components location

    C..

    EGR Cooler. Components and components location

    C..

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