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Home >> Pontiac >> 1993 >> Bonneville SE >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 3.8L "3800" V6 - VIN [L] >> Removal & Installation >> Oil Pump >> Inspection

Oil Pump: Inspection

  1. Check pump cover and front cover for: cracks, scoring, porous or damaged casting, damaged threads, or excessive wear.
  2. Check pressure regulator valve for: scoring, sticking in bore, or burrs.
  3. Check pressure regulator spring for: loss of tension or bent condition. If in doubt, replace the spring.
  4. Check oil pump gears for: chipping, galling, scoring, or excessive wear.
  5. Check oil pump gears for: inner gear tip clearance, outer gear diameter clearance, and gear end clearance (gear drop in housing). See OIL PUMP SPECIFICATIONS table.
  6. Check pressure regulator valve for: valve to bore clearance. See OIL PUMP SPECIFICATIONS table.
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