Important: Tighten the exhaust manifold bolts as specified in the service procedure. Improperly installed and/or leaking exhaust manifold gaskets may effect vehicle emissions and/or On-Board Diagnostics (OBD) II system performance.
The cylinder head exhaust manifold bolt hole threads must be cleaned and free of debris or threadlocking material.Notice: Refer to Fastener Notice in the Preface section.
Tighten
Tighten the exhaust manifold bolts and nuts to 25 N·m (18 lb ft). Tighten the exhaust manifold bolts and nuts beginning with the center two nuts. Alternate from side-to-side, working toward the outside
bolts and nuts.
Tighten
Tighten the exhaust hanger bolt to 50 N·m (37 lb ft).
Tighten
Tighten the exhaust manifold heat shield bolts to 10 N·m (89 lb in).
Notice: Refer to Oxygen Sensor Notice in the Preface section.
Tighten
Tighten the oxygen sensors to 42 N·m (30 lb ft).