1953-1960 Classic Car Engines Troubleshooting Guide: High Oil Pressure

The text for this Guide originally appeared in the 23rd edition of Motor's Repair Manual, published in 1960 and copyrighted by Motor Information Systems, and is used with their permission.

Things to Look For:

1. Oil pressure gauge defective.
2. Oil too heavy.
3. Oil pressure relief valve adjustment too heavy.
4. Relief valve spring too stiff.
5. Oil pressure relief passage clogged.
6. Plunger type relief valve stuck by gummy oil or plunger is too tight a fit.
7. Main oil passages on pressure side of pump clogged.

The Complete Guide to Troubleshooting 1953-1960 Era American Classic Car Engines