Exhaust Manifold Installation - Left

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: View Of Left Exhaust Manifold Tightening Sequence
Courtesy of GENERAL MOTORS CORP.
Install the left 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 exhaust manifold heat shield.

Fig 2: Installing Left Exhaust Manifold Heat Shield & 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).