Nissan Versa Sedan Service ManualEngine » Engine mechanical (EM)
Exhaust manifold
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
- Remove air duct (inlet), air duct and air cleaner assembly.
- Remove exhaust center tube and front tube.
- Remove the airfuel ratio sensor harness bracket from the cylinder head on the right rear side.
- Remove exhaust manifold cover.
- Disconnect the harness from airfuel ratio sensor 1.
- Remove exhaust manifold side bolt of exhaust manifold stay.
- Remove exhaust manifold.
- Loosen nuts in reverse order as shown.
- 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)
- Remove exhaust manifold gasket and discard.
- 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.