Exhaust Manifold: Service and Repair

EXHAUST MANIFOLD

REMOVAL
1. Disconnect negative battery cable.
2. Raise vehicle on hoist.
3. Remove complete exhaust system.
4. Remove rear engine mount and transaxle bracket.





5. Remove exhaust manifold heat shield.
6. Disconnect oxygen sensor electrical connector.
7. Remove exhaust manifold retaining fasteners and remove exhaust manifold.
8. Remove and discard manifold gasket.

CLEANING
1. Discard gasket (if equipped) and clean all surfaces of manifold and cylinder head.

INSPECTION
1. Inspect manifold gasket surfaces for flatness with straight edge. Surface must be flat within 0.15 mm per 300 mm (0.006 in. per ft.) of manifold length.
2. Inspect manifolds for cracks or distortion. Replace manifold as necessary.

INSTALLATION
1. Install new exhaust manifold gasket. DO NOT APPLY SEALER.





2. Position exhaust manifold in place. Tighten fasteners in sequence shown, to 23 Nm (200 in. lbs.). Repeat this procedure until all fasteners are at specified torque.
3. Install exhaust manifold heat shield.
4. Connect oxygen sensor electrical connector.
5. Install rear engine mount and transaxle bracket.
6. Install exhaust system. Tighten fasteners to 28 Nm (250 in. lbs.).
7. Lower vehicle.
8. Connect negative battery cable.