Oil Pressure Inspection: L3

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

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 working with engine oil.
Hot engines and the engine oil can cause severe burns. Turn off the engine and wait until it and the engine oil have cooled.

Remove the under cover.
Remove the oil pressure switch.
Screw the SSTs into the oil pressure switch installation hole.
Warm up the engine to normal operating temperature.
Run the engine at the specified speed, and note the gauge readings.
- If not within the specification, inspect for the cause and repair or replace as necessary.
  NOTE:
  - The oil pressure can vary with oil viscosity and temperature.
    
    Fig 1: Installing SSTs Into Oil Pressure Switch Hole
    Courtesy of MAZDA MOTORS CORP.
  Oil pressure
  
  395-649 kPa {4.03-6.61 kgf/cm ² , 57.3-94.1 psi} [3,000 rpm]
Stop the engine and wait until it is cool.
Remove the SSTs.
Apply silicone sealant to the oil pressure switch threads as shown in the figure.

Fig 2: Applying Sealant To Oil Pressure Switch
Courtesy of MAZDA MOTORS CORP.
Install the oil pressure switch.
Tightening torque

12-18 N.m {1.2-1.8 kgf.m, 9-13 ft.lbf}
Start the engine and inspect for oil leakage.
- If the oil leaks, specify the faulty part and repair or replace it.
Install the under cover.