Radiator Cap Inspection

WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.

Attach the radiator cap to a radiator cap tester with the SST . Apply pressure gradually.

Fig 1: Pressure Testing Radiator Cap
Courtesy of MAZDA MOTORS CORP.
Verify that the pressure becomes stable within the specification.
- If the pressure is held for 10 s , the radiator cap is normal.
  Pressure
  
  94-122 kPa {0.95-1.25 kgf/cm ² , 13.5-17.7 psi}