Exhaust Manifold Installation - Right

WARNING: This page is about a different car, the 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.

Install the exhaust manifold studs.
Tighten

Tighten the exhaust manifold studs to 18 N.m (13 lb ft).
Install the exhaust manifold gasket.
Install the exhaust manifold.
Install the exhaust manifold nuts in sequence.
Tighten

Tighten the exhaust manifold nuts in sequence to 16 N.m (12 lb ft).

Fig 1: Installing Right Exhaust Manifold Nuts In Sequence
Courtesy of GENERAL MOTORS CORP.
Install the right side spark plugs.
Tighten
- Tighten the spark plugs to 27 N.m (20 lb ft) when installing spark plugs into a new cylinder head.
- Tighten the spark plugs to 15 N.m (13 lb ft) when re-installing after initial installation.
Install the lower exhaust manifold heat shield.
Install the upper exhaust manifold heat shield.

Fig 2: Installing Upper & Lower Exhaust Manifold Heat Shields & Mounting Bolts
Courtesy of GENERAL MOTORS CORP.
Install the exhaust manifold heat shield bolts.
Tighten

Tighten the exhaust manifold heat shield bolts to 10 N.m (89 lb in).
Coat the threads of the heated oxygen sensor with anti-seize compound.
Install the heated oxygen sensor.
Tighten

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

Fig 3: Installing Heated Oxygen Sensor
Courtesy of GENERAL MOTORS CORP.
Install the EGR pipe to the exhaust manifold.
Tighten

Tighten the EGR pipe nut to 25 N.m (18 lb ft).
Install the spark plug wires.