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Oil Pump: Inspection

WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean the parts in solvent. Dry the parts with compressed air. Inspect the oil pump housing and the cover for cracks, excessive wear, scoring, or casting imperfections. Inspect the oil pump housing-to-engine block oil gallery surface for scratches or gouging.
  2. Inspect the oil pump housing for damaged bolt hole threads. Inspect the relief valve plug and plug bore for damaged threads. Inspect the oil pump internal oil passages for restrictions.
  3. Inspect the drive gear and driven gear for chipping, galling or wear. Minor burrs or imperfections on the gears may be removed with a fine oil stone.
  4. Inspect the drive gear splines for excessive wear. Inspect the pressure relief valve and bore for scoring or wear. The valve must move freely in the bore with no restrictions.
  5. Inspect the oil pump screen for debris or restrictions. Inspect the oil pump screen for broken or loose wire mesh.
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