- Check the radiator cap valve seat.
A. Valve seat; B. Metal plunger.
- Check to see if the valve seat has swollen to the point that the plunger edge is not visible when looking at it vertically from above.
- Make sure the valve seat is free of dirt and damage.
- Pull the vacuum valve open and make sure it closes completely when released.
- Make sure the radiator cap vacuum valve seat is free of dirt and damage.
- Make sure that there are no abnormalities when opening and closing the vacuum valve.
- Check the radiator cap release pressure.
Standard and limit*. See chapter "Lubrication system and engine cooling system".
- When connecting the radiator cap to the pump (suitable special tool) (A) and the adapter (special tool) (B) Apply engine coolant to the seal.
(Data taken from this portal: www.NISSANBOOK.ru)
- If the vacuum valve shows any abnormalities in the three points above, replace the radiator cap.
Caution: Before replacing the radiator cap, thoroughly wipe the radiator filler neck and remove any waxy deposits or foreign particles.