GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1997 🢒 Skylark 🢒 Engine 🢒 Engine Mechanical - 3.1L and 3.4L 🢒 Lower Intake Manifold Cleaning and Inspection
  1. Clean the lower intake manifold gasket surfaces.
  2. Clean the injector bores.
  3. Clean the injector nozzles.
  4. Clean the lower intake manifold bolts and studs.