Oil Pump - Cleaning & Inspection
WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
- Clean all of the parts in cleaning solvent. Dry the parts with compressed air.
- Inspect the following areas:
- The oil pump housing and cover for cracks, scoring (3), casting imperfections, and damaged threads.
- The drive gear shaft (5). If the shaft is loose in the oil pump housing, replace the oil pump.
- The pressure relief valve for scoring and sticking. Burrs may be removed with a fine oil stone.
- The relief valve spring for loss of tension.
- The oil pump screen for broken wire mesh or looseness. If the pipe is loose or has been removed from the screen, the oil pump screen must be replaced.
- The gears for chipping, galling, and wear (1,2).
Important: If the drive gear and driveshaft are worn, replace the entire oil pump.
- The drive gear and driveshaft for looseness and wear.