59 - 103 kpa
The radiator cap controls cooling system pressure.The radiator cap controls cooling system pressure.
No, there should not be pressure in the radiator after cooling down. If there is still pressure, it could indicate a problem with the radiator cap or the cooling system, such as a leak or a failing pressure release valve.
There is a leak somewhere in the cooling system. Have the cooling system pressure tested for leaks.
Radiator Cap?
You pressure test the cooling system
14 to 18 psi in all of the cooling system
Pressure in the radiator is created by the cooling system when the engine heats up. The thermostat regulates the flow of coolant to maintain the optimal temperature. If there is pressure in the radiator while the thermostat is working properly, it is usually due to the natural expansion of coolant as it heats up, which is necessary for efficient cooling.
You use a radiator pressure tester to apply pressure to the cooling system. You can then look for leaks.
pressure test the cooling system
Hyundai got excellent cooling system, you might have a little hole in your radiator that affects cooling circulation pressure? check if you have tight cooling system pressure.COCORICO
Wrong PSI radiator cap or defective radiator cap installed. NEW ANSWER: The above answer is true ( COULD BE ) But I would bet you have a BLOWN / LEAKING head gasket that is building pressure in the water / cooling system.
Keep the cooling system at a predetermined rate of pressure. Raise the boiling point. Allow excess pressure to escape. Allow the cooling system to withdraw coolant from the reservoir.