GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Opel 🢒 2009 🢒 Insignia HB (Global Epsilon) 🢒 Engine 🢒 Engine Mechanical - 2.8L, 3.0L, 3.2L, or 3.6L 🢒 Exhaust Manifold Cleaning and Inspection - Bank 1

Cleaning Procedure
  1. Clean the exhaust manifold in solvent.

    2. Warning: Wear safety glasses in order to avoid eye damage.

  2. Dry the exhaust manifold with compressed air.

Inspection Procedure

    Object Number: 2026799 Size: SH
  1. Inspect the right exhaust manifold for the following:
    2. • Damage or excessive corrosion to the exhaust manifold exterior (3)
    • Damage to the exhaust manifold mounting holes (2)
    • Damage to the threaded holes (4)
    • Damage to the exhaust manifold flange bolt holes (1)

    Object Number: 2026980 Size: SH
  2. Inspect the right exhaust manifold for the following:
    3. • Damage to the gasket sealing surfaces (1)
    • Damage or restrictions within the exhaust passages (2)
  3. Repair or replace the right exhaust manifold and/or components as necessary.

    4. Object Number: 1830276 Size: SH
  4. Measure the alignment or surface flatness of the exhaust manifold flanges, using a straight edge and a feeler gage. Exhaust manifold surface flatness must not exceed 0.254 mm (0.010 in).
  5. If the surface flatness is not within specifications, the exhaust manifold is warped and must be replaced.