Front

REMOVAL
FRONT EXHAUST MANIFOLD
1. Disconnect negative battery cable.
2. Disconnect and remove oxygen sensor.
3. Raise vehicle on hoist.
4. Remove exhaust cross-under pipe.
5. Remove front catalytic converter.
6. Lower vehicle.
7. Remove exhaust manifold attaching bolts and remove manifold.

INSPECTION
1. Inspect exhaust manifolds for damage or cracks.
2. Check manifold flatness.
3. Inspect the exhaust manifold gasket for obvious discoloration or distortion.
4. Check distortion of the cylinder head mounting surface with a straightedge and thickness gauge.

INSTALLATION
FRONT EXHAUST MANIFOLD
1. Install exhaust manifold and gasket. Tighten bolts starting at the center working outward to 23 Nm (200 inch lbs.).
2. Raise vehicle on hoist.
3. Install front catalytic converter and manifold heat shield. Tighten fasteners to 28 Nm (250 inch lbs.).
4. Install exhaust cross-under pipe. Tighten fasteners to 28 Nm (250 inch lbs.).
5. Lower vehicle.
6. Install oxygen sensor and connect electrical connector.
7. Connect negative battery cable.