Radiator Cap: Inspection
WARNING: This page is about a different car, the 2004 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
- Attach the radiator cap to tester.
- Increase the pressure until tester gauge pointer stops. Radiator cap is functioning properly if it holds the service limit pressure for 5 to 6 seconds.
Standard pressure:
93 - 123 kPa (0.95 - 1.25 kg/cm 2 , 14 - 18 psi)
Service limit pressure:
83 kPa (0.85 kg/cm 2 , 12 psi)
CAUTION: Be sure to remove foreign matter and rust from the cap in advance otherwise, results of pressure test will be incorrect.