What are the symptoms of air in the radiator?
2 Answers
Here are the symptoms of air in the radiator: 1. When there is air in the car radiator, it can cause insufficient coolant, leading to excessive engine temperature and triggering a high-temperature warning. 2. It can easily cause the engine to overheat and be damaged, especially as the cooling water may overflow during the cooling process. 3. Air pockets in the radiator's antifreeze can obstruct the flow of coolant, reducing its cooling effectiveness. Methods to remove air from the radiator: 1. Open the engine compartment when the car is cold and check if the coolant is sufficient. If the level is below the lower limit when the engine is cold, add coolant according to the markings on the side of the reservoir. 2. Drain the old antifreeze, flush the liquid channels with clean water, ensuring a continuous flow through the engine cooling system. Then, start the engine and let it idle for 3 to 5 minutes to circulate the water. Continue adding clean water until the water coming out is clear.
When there's air in the cooling system, I can see obvious fluctuations on the temperature gauge—the temperature keeps rising and falling unpredictably, especially spiking up when the engine gets hot. Driving feels like riding a rollercoaster with all the tension. The trapped air disrupts coolant flow, causing the heater to fail completely—blowing cold air even when the heater is on, making the car feel like a freezer in winter, which is far from comfortable. I've also noticed frequent bubbles gurgling in the coolant reservoir, a clear sign of air wreaking havoc in the system. Driving like this for long can lead to engine overheating, localized hot spots, and doubled repair costs. To prevent this, I regularly check the coolant level and ensure proper system bleeding when topping up to avoid air pockets. Bleeding the system isn't hard to do yourself, but always wait until the engine cools down—getting burned is the last thing you want.
