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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Engine Mechanical - 3.9L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Exhaust Manifold Installation - Left >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Left Exhaust Manifold & Gasket
    GM1645443Courtesy of GENERAL MOTORS CORP.
  1. Install the exhaust manifold gasket.
  2. Install the exhaust manifold.
    3. NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  3. Install the exhaust manifold bolts.

    Tighten:  Tighten the exhaust manifold bolts in sequence to 20 N.m (15 lb ft).

    4. Fig 2: Installing Spark Plugs & Heat Shield
    GM1645442Courtesy of GENERAL MOTORS CORP.
  4. Install the exhaust manifold heat shield.
  5. Install the exhaust manifold heat shield bolts.

    Tighten:  Tighten the exhaust manifold heat shield bolts to 10 N.m (89 lb in).

  6. Install the spark plugs.

    Tighten:  Tighten the spark plugs to 15 N.m (11 lb ft).

  7. Install the spark plug wires.
  8. Install the heated oxygen sensor.

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

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