What Causes Pressure in the Car Radiator?
1 Answers
Car radiator has pressure for the following reasons: Water vapor: Gas generated after prolonged engine operation from water or coolant, which is a normal phenomenon. However, once the pressure inside the radiator exceeds the factory-set pressure value of the radiator cap, it will automatically open to release the pressure. If this pressure is not released, it can cause high pressure in the radiator system. Damaged cylinder head gasket: The presence of bubbles or turbulence in the radiator indicates damage to the gasket between the engine block and cylinder head, commonly known as a blown head gasket. During cylinder operation, the piston's reciprocating motion continuously compresses and creates a vacuum. If the head gasket is damaged, the cylinder's compression will directly pressurize the radiator, and during the vacuum phase, it will draw coolant into the cylinder, causing damage to the cylinder interior and lubrication system.