Checking Radiator Cap
WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
- Pull the negative-pressure valve to open it and check that it closes completely when released.
- Check that there is no dirt or damage on the valve seat of the radiator cap negative-pressure valve.
- Check that there are no abnormalities in the opening and closing conditions of the negative-pressure valve.
- Check radiator cap relief pressure using Tool.
- Standard: 78 - 98 kPa (0.8 - 1.0 kg/cm2 , 11 - 14 psi)
- Limit: 59 kPa (0.6 kg/cm2 , 9 psi)
- When connecting the radiator cap to the tester, apply water or coolant to the cap seal surface.
- Replace the radiator cap if there is an abnormality in the negative-pressure valve, or if the open-valve pressure is outside of the standard values.