For 1990-2009 cars only
- Remove the oil pressure relief valve plug (1), spring (2), and plunger (3).
- Remove the oil pump gerotor cover (1) and bolts.
- Clean all of the parts in cleaning solvent. Remove varnish, sludge, and dirt.
- Inspect the oil pump (2, 3) for wear and scoring. Ensure that all components are within specifications. Refer to Engine Mechanical Specifications.
- Replace the front cover (4) and oil pump assembly if it is out of specification or damaged.
