- Check and fill the engine oil to the proper level prior to performing
the testing procedure.
- Connect a tachometer or a scan tool.
- Remove the engine oil pressure switch and
install the EN 46333
(1),
flexible hose (2) and the SA9127E
(3).
Important: Shut the engine off immediately if the gage
measures no oil pressure. Repair the condition before continuing. If the oil pressure
is not within specifications, inspect the oil pump. Refer to
Oil Pump Cleaning and Inspection
.
- Start the engine and allow it to reach normal operating temperature. Measure
the engine oil pressure.
Specification
| • | Engine oil temperature: 80°C (176°F) |
| • | Engine oil pressure - at idle speed: 70 kPa (10 psi)
minimum |
| • | Engine oil pressure - at 3,000 RPM: 490 kPa (71 psi) |
- Low or no oil pressure may be caused by one or more of the following
conditions:
| • | Dirty or improper viscosity oil |
| • | Worn or sticking oil pump pressure relief valve |
| • | Loose or damaged oil pump screen or cut O-ring seal |
| • | Excessive main or connecting rod bearing clearance |
- Higher than recommended oil pressure may be caused by one or more of
the following conditions:
| • | Worn or sticking oil pump pressure relief valve |
