How to Bleed Air When Adding Antifreeze to Emgrand?
2 Answers
Open the radiator cap of the water tank, then start the car engine for a period of time to expel the air. In addition to frost protection, automotive antifreeze offers the following advantages: 1. Antifreeze prevents scaling: Dust adhering to the metal surfaces of the water tank and water jacket forms a layer that increasingly reduces the actual heat dissipation efficiency of the heat pipes, and is difficult to remove. 2. High boiling point of antifreeze: While water boils at 100°C, high-quality antifreeze typically has a boiling point above 110°C, making it less prone to boiling than water during summer use. 3. Corrosion resistance: Diesel engines and cooling systems are made of metals including copper, iron, aluminum, steel, and solder wire. These metals can corrode and rust when exposed to water at high temperatures. Automotive antifreeze not only minimizes corrosion to the diesel engine cooling system but also provides anti-corrosion and anti-rust protection.
To bleed air after adding coolant to the Emgrand, my experience is to start with a cold engine. Open the expansion tank cap, fill it with coolant, and leave the cap off. After starting the engine, let it idle for a few minutes. When the temperature gauge rises to the halfway point, increase the RPM to around 2000 and hold it for a while. You'll see bubbles coming out of the tank opening. If there are any, gently squeeze the upper and lower hoses with a soft tube or a special tool to help release the air. Keep an eye on the coolant level throughout the process and top it up until it stabilizes and no more bubbles appear. Finally, tighten the cap and check that the coolant level is within the normal range in both cold and hot conditions. Remember, this method is simple and safe, and doing it yourself can save on repair costs. But don't forget to work in a well-ventilated area, as hot steam and water can scald your hands. Regularly checking the cooling system can prevent air buildup.
