Nissan Versa (N17): Exhaust manifold

Exploded View

1. Exhaust manifold cover 2. Harness bracket 3. Airfuel ratio sensor 1 4. Exhaust manifold stay 5. Heat insulator 6. Exhaust manifold 7. Exhaust manifold cover 8. Gasket

: Engine front

Removal and Installation

REMOVAL

1. Remove air duct (inlet), air duct and air cleaner assembly.
2. Remove exhaust center tube and front tube.
3. Remove the airfuel ratio sensor harness bracket from the cylinder head on the right rear side.
4. Remove exhaust manifold cover.
5. Disconnect the harness from airfuel ratio sensor 1.
6. Remove exhaust manifold side bolt of exhaust manifold stay.
7. Remove exhaust manifold.

• Loosen nuts in reverse order as shown.

8. Use Tool (A) to remove the airfuel ratio sensor 1 (if necessary).

Tool number : KV10117100 ( - )

CAUTION:

• Handle the airfuel ratio sensor carefully and avoid impacts.
• Before installing a new airfuel ratio sensor 1, clean the exhaust tube threads using suitable tool and approved antiseize lubricant.
• If airfuel ratio sensor is dropped onto a hard surface, such as a concrete floor, from a height of 0.5 m or more, discard the sensor and use a new one.

Oxygen sensor thread cleaner : - (J4389712)

Oxygen sensor thread cleaner : - (J4389718)

9. Remove exhaust manifold gasket and discard.
10. Remove stud bolt using suitable tool from cylinder head (if necessary)

INSPECTION AFTER REMOVAL

Mounting Surface Distortion

• Using suitable tools (A) and (B), check the surface distortion of the exhaust manifold mating surface as shown.

• Replace exhaust manifold if it exceeds the limit.

INSTALLATION

Installation is in the reverse order of removal. Note the following:

Exhaust manifold

1. Tighten nuts in numerical order as shown.

2. Tighten nuts in numerical order to the specified torque again.

Airfuel ratio sensor 1

• Use Tool (A) to install the airfuel ratio sensor 1 (if removed).

Tool number : KV10117100 ( - )

CAUTION:

• Handle it carefully and avoid impacts.
• Before installing a new airfuel ratio sensor 1, clean the exhaust tube threads using suitable tool and approved antiseize lubricant.
• Do not overtighten the airfuel ratio sensor 1. Doing so may damage the airfuel ratio sensor 1, resulting in the MIL coming on.

Oxygen sensor thread cleaner : - (J4389712)

Oxygen sensor thread cleaner : - (J4389718)

INSPECTION AFTER INSTALLATION

Inspection

- Start engine and raise engine speed to check for exhaust leaks.