GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1996 🢒 Chevy G Van 🢒 Engine 🢒 Engine Mechanical - 4.3L (VIN W) 🢒 Exhaust Manifold Cleaning and Inspection

    Important: Do not reuse the exhaust manifold-to-cylinder head gaskets. Upon installation of the exhaust manifold, install a NEW gasket. A improperly installed gasket or leaking exhaust system may effect OBD II system performance.

  1. Clean the exhaust manifold in solvent.
  2. Dry the exhaust manifold with compressed air.
  3. Inspect the exhaust manifold gasket sealing surfaces for damaged.
  4. Use a straight edge and a feeler gage and measure the exhaust manifold-to-cylinder head sealing surface for warpage.
    5. • Exhaust manifold flanges with warpage in excess of 0.254 mm (0.010 in), must be replaced.