MANIFOLD-EXHAUST-LEFT
REMOVAL
1. Disconnect battery negative cable.
2. Remove the fresh air hose (1).
3. Disconnect left cylinder bank spark plug wires.
4. Remove heat shield attaching bolts.
5. Remove bolts attaching exhaust to manifold.
6. Disconnect the left side oxygen sensors (1,2).
7. Remove bolts attaching exhaust manifold to cylinder head.
8. Remove the exhaust manifold.
CLEANING
1. Discard gasket (if equipped) and clean all surfaces of manifold and cylinder head.
INSPECTION
Inspect exhaust manifolds for damage or cracks and check distortion of the cylinder head mounting surface and exhaust crossover mounting surface with a straightedge and thickness gauge.
Manifold surface flatness limits should not exceed 1.0 mm (0.039 in.).
INSTALLATION
1. Position exhaust manifold (1) on cylinder head. Install bolts to center runner (cylinder #4) and initial tighten to 2.8 N·m (25 in. lbs.).
2. Position heat shield (2) on manifold.
3. Install the remaining manifold attaching bolts. Tighten all bolts to 23 N·m (200 in. lbs.).
4. Install and tighten heat shield attaching nut (3) to 12 N·m (105 in. lbs.).
5. Attach exhaust pipe to exhaust manifold and tighten bolts to 41 N·m (30 ft. lbs.).
6. Connect the left side oxygen sensors (1,2).
7. Connect battery negative cable.