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Oil Pressure Inspection

WARNING:
  • Continuous exposure to USED engine oil has caused skin cancer in laboratory mice. Protect your skin washing with soap and water immediately after working with engine oil.
  • Hot engines and engine oil are hot, they can cause burns. Turn off the engine and wait until it and engine oil have cooled.
  1. Remove the oil pressure switch.
  2. Screw the SST  into the oil pressure switch installation hole.
  3. Warm up the engine to normal operating temperature.
  4. Run the engine at the specified speed, and note the gauge readings.
    • If the pressure is not as specified, inspect amount of engine oil, and inspect for oil leakage or any wear parts inside of engine, etc. Repair or replace if necessary.
    Fig 1: Inspecting Oil Pressure
    G01174572Courtesy of MAZDA MOTORS CORP.
    NOTE:
    • The oil pressure can vary with oil viscosity and temperature.
    1. Oil pressure 295-392 kPa {3.0-4.0 kgf/cm 2  , 43-56 psi} [3,000 rpm] 
  5. Stop the engine and wait until it is cool.
  6. Remove the SST  .
  7. Apply silicone sealant to the oil pressure switch threads as shown.
    Fig 2: Applying Silicone Sealant To Oil Pressure Switch Threads
    G01174573Courtesy of MAZDA MOTORS CORP.
    CAUTION:
    • Do not apply liquid gasket to the tip of the oil pressure switch by 1.0-2.0 mm {0.4-0.7 in}.
  8. Install the oil pressure switch.
    1. Tightening torque 12-17 N.m {1.2-1.8 kgf.m, 9-13 ft.lbf} 
  9. Start the engine and inspect for oil leakage.
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