Removal and Replacement

Exhaust Manifold









Removal

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Jacking and Lifting Service and Repair.

2. Remove the exhaust downpipe and exhaust intermediate pipe. For additional information, refer to Exhaust System Exhaust Downpipe and Exhaust Intermediate Pipe.

3. Disconnect the Heated Oxygen Sensor (HO2S) electrical connector.

4. Remove the 4 exhaust manifold heat shield bolts and the heat shield.

5. Remove and discard the 7 exhaust manifold nuts.

6. Remove the exhaust manifold and discard the exhaust manifold gasket.

7. Remove and discard the 7 exhaust manifold studs.

8. Clean and inspect the exhaust manifold. For additional information, refer to Engine System - General Information Exhaust Manifold Cleaning and Inspection.

Installation

1. Install the 7 new exhaust manifold studs.
- Tighten to 17 Nm (150 lb-in).

2. NOTICE: Failure to tighten the catalytic converter nuts to specification before installing the converter bracket bolts will cause the converter to develop an exhaust leak.

NOTICE: Failure to tighten the catalytic converter nuts to specification a second time will cause the converter to develop an exhaust leak.

Install a new exhaust manifold gasket, the exhaust manifold and 7 new nuts in the sequence shown in 2 stages:

- Stage 1: Tighten to 48 Nm (35 lb-ft).

- Stage 2: Tighten to 48 Nm (35 lb-ft).





3. Install the exhaust manifold heat shield and the 4 bolts.
- Tighten to 10 Nm (89 lb-in).

4. Connect the HO2S electrical connector.

5. Install the exhaust downpipe and exhaust intermediate pipe. For additional information, refer to Exhaust System Exhaust Downpipe and Exhaust Intermediate Pipe.