Removal And Installation

EXHAUST MANIFOLD


Removal and Installation


REMOVAL
1. Remove cowl top. Service and Repair.
2. Remove exhaust front tube. Component.
3. Remove exhaust manifold cover.





4. Remove the A/F ratio sensor 1, using Tool (A).






CAUTION:
- Be careful not to damage heated oxygen sensor or air fuel ratio (A/F) sensor.
- Discard any heated oxygen sensor or air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.
5. Remove exhaust manifold side bolt of exhaust manifold stay.





6. Loosen nuts in reverse order as shown and remove exhaust manifold.

Arrow Indicates Engine Front

CAUTION:
Cover engine openings to avoid entry of foreign materials.

INSPECTION AFTER REMOVAL

Surface Distortion





- Using straightedge (B) and feeler gauge (A), check the surface distortion of exhaust manifold mating surface in each exhaust port and entire part.






- If it exceeds the limit, replace exhaust manifold.

INSTALLATION





1. Install exhaust manifold gasket to cylinder head as shown.

Arrow Indicates Engine Front





2. Tighten exhaust manifold nuts to specification in two stages in the numerical order as shown.

Arrow Indicates Engine Front

3. Install exhaust manifold stay.





- Install exhaust manifold stay (2) in the direction as shown
(except for California).










4. Install the A/F ratio sensor 1, using Tool (A).






CAUTION:
- Handle it carefully and avoid impacts.
- Before installing a new A/F ratio sensor, clean the exhaust tube threads using suitable tool and approved anti-seize lubricant.
- Do not over-tighten the A/F ratio sensor. Doing so may damage the A/F ratio sensor, resulting in the MIL coming on.






5. Installation of the remaining parts is in the reverse order of removal.