For 1990-2009 cars

## Exhaust Manifold Replacement Right Side

### Removal Procedure

1. Remove the oil level indicator and tube. Refer to Oil Level Indicator and Tube Replacement .
2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
3. Remove the right exhaust manifold pipe nuts.
4. Lower the vehicle.
5. Loosen the AIR hose clamps and remove the hose.
6. Remove the AIR pipe (with check valve), bolts and gasket from the right exhaust manifold.
7. Disconnect the coil harness main connector.
8. Remove the spark plug wires from the ignition coils.
9. Remove the spark plug wires from the spark plugs.
10. Remove the spark plugs.
11. Remove the valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement .
12. Disconnect the EGR valve connector.
13. Remove the EGR valve pipe.
14. Remove the exhaust manifold, bolts and gasket.
15. Discard the gasket and the bolts.

### Installation Procedure

1. Install the exhaust manifold to the cylinder head. Refer to Exhaust Manifold Installation .

Notice: Refer to Fastener Notice in the Preface section.

2. Install the EGR valve pipe.

Tighten

• | Tighten the EGR valve pipe to exhaust manifold bolts to 25 N·m (18 lb ft).

• | Tighten the EGR valve pipe to cylinder head bolt to 50 N·m (37 lb ft).

• | Tighten the EGR valve pipe to intake manifold bolt to 12 N·m (106 lb in).

3. Connect the EGR valve connector.
4. Install the valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement .
5. Install the spark plugs.

Tighten
Tighten the spark plugs to 15 N·m (12 lb ft).

6. Install the spark plug wires to the spark plugs.
7. Install the spark plug wires to the ignition coils.
8. Connect the coil harness main connector.
9. Install the AIR pipe (with check valve), bolts and gasket to the right exhaust manifold.

Tighten
Tighten the AIR pipe to exhaust manifold bolts to 20 N·m (15 lb ft).

10. Install the AIR hose and clamps.
11. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
12. Install the right exhaust manifold pipe nuts.

Tighten
Tighten the right exhaust manifold pipe nuts to 35 N·m (26 lb ft).

13. Install the oil level indicator and tube. Refer to Oil Level Indicator and Tube Replacement .
14. Lower the vehicle.

## Exhaust Manifold Replacement Left Side

### Removal Procedure

#### Tools Required

J 34730-1A Fuel Pressure Gauge

1. Relieve the fuel system pressure using the J 34730-1A .
2. Remove the fuel lines from the vehicle.
3. Remove the PCV hose from the rocker arm cover.
4. Remove the spark plug wires from the ignition coils.
5. Remove the spark plug wires from the spark plugs.
6. Remove the spark plugs.
7. Loosen the AIR hose clamps and remove the hose.
8. Remove the AIR pipe (with check valve), bolts and gasket from the left exhaust manifold.
9. Remove the coolant sensor from the left cylinder head.
10. Remove the left side exhaust manifold bolts.
11. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
12. Remove the oxygen sensor from the exhaust manifold.
13. Remove the exhaust manifold pipe nuts.
14. Remove the catalytic converter nuts.
15. Remove the exhaust manifold from the vehicle.
16. Discard the bolts and gasket.

### Installation Procedure

1. Install the exhaust manifold to the cylinder head. Refer to Exhaust Manifold Installation .

Notice: Refer to Fastener Notice in the Preface section.

2. Install the catalytic converter nuts.

Tighten
Tighten the catalytic converter nuts to 25 N·m (18 lb ft).

3. Install the exhaust manifold pipe nuts.

Tighten
Tighten the exhaust manifold pipe nuts to 35 N·m (26 lb ft).

4. Install the oxygen sensor to the exhaust manifold.

Tighten
Tighten the oxygen sensor to 42 N·m (31 lb ft).

5. Lower the vehicle.
6. Instal the coolant sensor to the left cylinder head.
7. Install the AIR pipe (with check valve), bolts and gasket to the left exhaust manifold.

Tighten
Tighten the AIR pipe bolts 20 N·m (15 lb ft).

8. Install the AIR hose and clamps.
9. Install the spark plugs.

Tighten
Tighten the spark plugs to 15 N·m (11 lb ft).

10. Install the spark plug wires to the spark plugs.
11. Install the spark plug wires to the ignition coils.
12. Install the PCV hose to the rocker arm cover.
13. Install the fuel lines to the vehicle.