How to Remove Air from the Radiator?
2 Answers
The method to remove air from the radiator is as follows: 1. After filling the radiator with coolant, keep the radiator cap open, then insert the key and turn on the ignition switch; 2. Set the air conditioning to the highest temperature in heating mode and the lowest fan speed; 3. Turn on the daytime running lights, i.e., move the headlight switch one position to the right; 4. Press the accelerator pedal all the way down for about 10 seconds. The symptoms of air in the car radiator include: The coolant in the radiator develops airlocks, which can hinder the smooth flow of the coolant. The engine cooling system dissipates some of the heat absorbed by the heated components in time, ensuring the engine operates at an appropriate temperature. The main components of the engine cooling system include the thermostat, water pump, water pump belt, radiator, cooling fan, temperature sensor, expansion tank, and heating device.
Having bubbles in the radiator is something I'd say is pretty common as an experienced driver, usually caused by improperly filled coolant or air in the system. First, I make sure the car is parked on level ground and cooled down, then check if the expansion tank level is low. Next, I start the engine and let it warm up. When the coolant temperature reaches the midpoint, I carefully locate the vent screw at the top of the radiator or the bypass. Loosening it slightly, I listen for a hissing sound, which means air is escaping. Keep the engine running until all bubbles are gone before tightening it back. Remember to wear heat-resistant gloves because the steam can be intense and may scald your skin. After bleeding, top up the coolant to the standard level and turn on the heater to check if the airflow is hot to verify the fix. If the issue keeps recurring, there might be a leak in the system. It's best to regularly inspect hoses and connections to prevent air from entering and avoid engine overheating damage.
