GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Firefly (Canada) 🢒 Engine 🢒 Engine Mechanical - 1.3L 🢒 Oil Pump Cleaning and Inspection
  1. Inspect the following components for excessive wear or for damage:
    2. • The oil pump outer gear (1)
    • The oil pump inner gear (2)
    • The oil pump cover
    • The oil pump body
    • The pressure relief valve

    Object Number: 262425 Size: SH
  2. Measure the radial clearance between the oil pump's outer gear and the oil pump body using a feeler gauge.

    3. Replace the oil pump's outer gear and/or the oil pump, if the clearance exceeds 0.310 mm (0.0122 in).


    Object Number: 262426 Size: SH
  3. Measure the side clearance between the oil pump gears and a straight edge using a feeler gauge.

    4. Replace the gears if the clearance exceeds 0.15 mm (0.0059 in).