Exhaust Manifold: Service and Repair

Exhaust Manifold Removal and Installation

WARNING: To avoid danger of being burned, do not service exhaust system while it is still hot. Service should be performed after system cools down.

Removal
1. Disconnect negative cable at battery.
2. Disconnect heated oxygen sensor-1 coupler (1) and detach it from its stay.





3. Remove upper cover (2) of exhaust manifold.





4. Remove exhaust manifold stiffener (1), if equipped.





5. Remove exhaust pipe bolts or nuts and exhaust pipe bracket bolt (if equipped).





6. Remove exhaust manifold (1) and its gasket (2) from cylinder head.

Installation





1. Install new gasket (1) to cylinder head.





2. Install exhaust manifold (1). Tighten manifold bolts and nuts to specified torque.





3. Install seal ring and install exhaust No.1 pipe (1) to exhaust manifold. Before installing seal ring, check it for deterioration or damage, and replace as necessary. Use new lock nuts if used. Tighten pipe fasteners to specified torque.





4. Install exhaust manifold stiffener (1), if equipped. Tighten exhaust manifold stiffener nut and bolt to specified torque.





5. Install upper cover (2) to exhaust manifold.
6. Connect heated oxygen sensor-1. coupler (1) and fit coupler to bracket securely.
7. Connect negative cable at battery.
8. Check exhaust system for exhaust gas leakage.