Oil Pressure Inspection

WARNING:

Continuous exposure to USED engine oil has caused skin cancer in laboratory mice. Protect your skin by washing with soap and water immediately after this working with engine oil.
Hot engines and oil can cause severe burns. Turn off the engine and wait until it and the engine oil have cooled.

Remove the intake manifold bracket. (FS)
Remove the oil pressure switch.
Screw the SST into the oil pressure switch installation hole.

Fig 1: Inspecting Oil Pressure (2.0L)
Courtesy of MAZDA MOTORS CORP.

Fig 2: Inspecting Oil Pressure (2.5L)
Courtesy of MAZDA MOTORS CORP.
Warm up the engine to normal operating temperature.
Run the engine at the specified speed, and note the gauge readings.
- If the pressure is not as specified, inspect for shortage of engine oil, oil leakage, or any worn parts inside of engine, etc. Repair or replace if necessary.
NOTE:
- The oil pressure can vary with oil viscosity and temperature.
Oil pressure

FS: 393-490 kPa {4.0-5.0 kgf/cm ² , 57-71 psi} [3,000 rpm]

KL: 334-490 kPa {3.4-5.0 kgf/cm ² , 49-71 psi} [3,000 rpm]
Stop the engine and wait until it is cool.
Apply silicone sealant to the oil pressure switch threads as shown.
Remove the SST.

Fig 3: Identifying Oil Pressure Switch Sealant Application
Courtesy of MAZDA MOTORS CORP.
Install the oil pressure switch.
Tightening torque

12-17 N.m {1.2-1.8 kgf.m, 9-13 ft.lbf}
Start the engine and inspect for oil leakage.
Install the intake manifold bracket. (FS)