OIL PRESSURE IS HIGH

LUBRICATION SYSTEM

TESTING AND ADJUSTING

OIL PRESSURE IS HIGH

Too Much Clearance at Engine Bearings or Open,

Broken or Disconnected Oil Line or

Oil pressure will be high if the bypass valve for the oil

Passage in Lubrication System

pump can not move from the closed

position.

Components that are worn and have too much

bearing clearance can cause oil pressure to be low. Low

TOO MUCH COMPONENT WEAR

oil pressure can also be caused by an oil line or oil

passage that is open, broken, or disconnected.

When some components of the engine show bearing

wear in a short time, the cause can be a restriction in an

Oil Cooler

oil passage. A broken oil passage can also be the cause.

Look for a restriction in the oil passages of the oil

If the gauge for oil pressure shows the correct oil

cooler.

pressure, but a component is worn because it is not

getting enough lubrication, look at the passage for oil

If the oil cooler has a restriction the oil temperature

supply to that component. A restriction in a supply

will be higher than normal when the engine is running.

passage will not let enough lubrication get to a component

The oil pressure of the engine will become low if the oil

and this will cause early wear.

cooler has a restriction