Oil Pressure High or Low

1. Incorrect fluid level.
2. Contaminated fluid or engine overheating.
3. Vacuum line leaking.
4. Modulator leaking or modulator diaphragm damaged.
5. Nicked, scored or stuck modulator valve.
6. Pressure regulator valve or spring damaged.
7. Pressure relief valve spring damaged or ball missing.
8. Oil pump damaged or restricted.
9. Aspirator "T" blocked or incorrectly installed.