Kia Niro: Intake And Exhaust System / Exhaust Manifold Repair procedures

Kia Niro 2017 (DE HEV) Service Manual / Engine Mechanical System / Intake And Exhaust System / Exhaust Manifold Repair procedures

Removal and Installation

1.	Remove the engine room under cover. (Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")

2.	Remove the air cleaner. (Refer to Intake and Exhaust System - "Air Cleaner")

3.	Disconnect the front oxygen sensor (A).

4.	Remove the front muffler. (Refer to Intake and Exhaust System - "Muffler")

Separate the water return & degas pipe (A).

Tightening torque :

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

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)

Remove the engine mounting support bracket.

(1)

Install the jack to the edge of the lower oil pan to support the engine.

Insert the rubber block between jack and upper oil pan.

(2)

Remove the engine mounting support bracket (A).

Tightening torque

Nut (B) :

88.3 - 107.9 N·m (9.0 - 11.0 kgf·m, 65.1 - 79.6 lb·ft)

Bolt (C) and nuts (D) :

58.8 - 73.5 N·m (6.0 - 7.5 kgf·m, 43.3 - 54.2 lb·ft)

Do not reuse the bolt C, which is special bolt coated with bond.

Remove the heat protector (A).

Tightening torque :

9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)

Remove the EGR cooler pipe A (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 (A).

Tightening torque :

34.3 - 39.2 N·m (3.5 - 4.0 kgf·m, 25.3 - 28.9 lb·ft)

When installing the exhaust manifold, tighten the nuts to pre-torque first and then fully tighten to the specified torque in the sequence shown.

11.

Remove the exhaust manifold gasket (A).

When installing, replace with a new gasket.

12.	Install in the reverse order of removal.

Exhaust Manifold Components and components location

Components 1. Exhaust manifold gasket 2. Exhaust manifold 3. Exhaust manifold stay 4. Heat protector ...

Exhaust Heat Recovery System(EHRS) Description and operation

Description and Operation During cold start or in winter, the fuel efficiency can be improved by heating up the coolant with the exhaust gas heat discharged after combusting the engine. ...

Other information:

Kia Niro 2017 (DE HEV) Service Manual: Coolant Repair procedures
Refilling And Bleeding Never remove the radiator cap when the engine is hot. Serious scalding could be caused by hot fluid under high pressure escaping from the radiator. ...

Kia Niro 2017 (DE HEV) Service Manual: EGR Cooler Repair procedures
Removal and Installation 1. Disconnect the negative battery terminal. 2. Remove the engine room under cover. (Refer to Engine and Transaxle Assembly - "Engine Room Under Cover") 3. Drain the coolant. ...