What happens if too much coolant is added?
1 Answers
After adding too much coolant, it may cause excessive pressure in the coolant expansion tank. The coolant expansion tank is designed to accommodate the expanded coolant, and there are markings on the expansion tank, with the lowest mark being 'min' and the highest mark being 'max'. The coolant level is most suitable between 'min' and 'max'. When too much coolant is added, the expansion tank cannot accommodate the expanded coolant, which can lead to excessive pressure and even cause the expansion tank cap to be pushed open. Additional information: 1. The antifreeze in the car's cooling system circulates in a semi-closed system, which mainly includes the engine cooling water channel, cooling pipes, radiator, water pump, and heater core. The antifreeze circulates in this small environment to dissipate heat and provide heat for the heater. When the engine temperature is too high, the cooling system pressure increases, and the coolant will push some of the expanded coolant into the expansion tank through the exhaust pipe above the radiator to maintain the normal pressure of the cooling system and prevent leaks at the pipe connections due to excessive pressure. The expansion tank is connected to the radiator. 2. The cooling system pressure is regulated by the spring on the radiator cap. When the pressure increases, it pushes open the spring on the radiator cap, and the high-temperature coolant flows from the overflow port on the side of the radiator into the expansion tank. The radiator cap contains a spring and a sealing gasket. Normally, the sealing gasket isolates the expansion tank from the cooling system, and when the pressure exceeds the normal value, it pushes open the spring to release pressure.
