How Long After Engine Overheating Can the Radiator Cap Be Opened?
1 Answers
After the engine overheats, it is necessary to wait for more than 15 minutes after stopping the vehicle before safely opening the radiator cap. Otherwise, opening it immediately can be very dangerous. When the vehicle's water temperature is too high, the owner must not rashly turn off the engine right away. Disadvantages of engine overheating: Engine power decreases. When the car is driving at temperatures above 35 degrees Celsius, with a tailwind or under heavy load at low speeds, the engine overheating phenomenon becomes more severe, further reducing the engine's air charging efficiency. This leads to a decrease in the amount of fresh air-fuel mixture entering the cylinders, lowers the average effective pressure in the cylinders, and results in reduced engine power. Increased fuel consumption: When the engine temperature is too high, the lubricating oil that enters the cylinders is prone to form carbon deposits under high-temperature and oxygen-deficient conditions. These deposits accumulate on the piston top, combustion chamber walls, valve tops, and spark plugs, forming hot spots. This can cause engine hot-spot ignition, leading to abnormal combustion. As a result, the engine block and cylinder head may deform, and cracks or warping may occur. The cylinder gasket may also burn out, causing a drop in cylinder pressure at the end of compression and an increase in fuel consumption.
