59 - 103 kpa
The radiator cap controls cooling system pressure.The radiator cap controls cooling system pressure.
There is a leak somewhere in the cooling system. Have the cooling system pressure tested for leaks.
With a radiator cap pressure tester. The tool usually comes along with a cooling system pressure test kit.
Radiator Cap?
You pressure test the cooling system
You should have pressure in the cooling system. The radiator cap is marked as to how much pressure it is designed to hold, usually 15 to 17 lbs.
14 to 18 psi in all of the cooling system
You use a radiator pressure tester to apply pressure to the cooling system. You can then look for leaks.
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
pressure test the cooling system
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.