High oil pressure usually occurs after the engine is first started in cold weather. Cold start oil pressure typically
will be approximately 552-689 kPa [80-100 psi]. If the pressure regulator plunger is operating properly the oil
pressure should drop back to approximately of 449 kPa [65 psi] when normal operating temperature is reached.
Lubricating Oil Pressure Regulating Valve
The engine will have high oil pressure at normal operating temperature if the regulator sticks in the closed position.
Check the regulator for freedom of movement.
Refer to the Oil Pressure Regulator Valve/Spring Replacement procedure on page 2-17.
