What to Do When a Car's Air Conditioning Has a Slow Refrigerant Leak That Can't Be Detected?
2 Answers
Methods to handle a car's air conditioning refrigerant leak that cannot be detected: 1. If you can smell the refrigerant in the cabin, it means the condenser in the evaporator is leaking; 2. Check the condenser near the radiator and the air conditioning compressor; 3. Add fluorescent dye along with the refrigerant, and after using the air conditioning, inspect the system with a dedicated UV light—any leakage points will glow. Car air conditioning refers to the air conditioning device installed in a vehicle, which can cool, heat, ventilate, and purify the air inside the cabin, providing a comfortable environment for passengers, reducing driver fatigue, and improving driving safety.
Slow refrigerant leaks can be hard to detect. I've seen many cases like this in repair shops, mostly caused by tiny gaps in small joints or pipes. First, apply soapy water to AC pipe connections and watch for bubbles – slow leaks might not show. You can also add fluorescent dye to the system, run it for a few days, then use a UV light to check the engine bay for green glow indicating leak points. If still undetectable, the issue might be inside the evaporator or condenser requiring professional tools. Best solution is to visit a reliable repair shop for nitrogen pressure testing – don't waste time with guesswork. Regular AC system checks are crucial for prevention. When cooling efficiency drops rapidly during summer usage, repair immediately to avoid complete refrigerant loss and environmental harm. Timely maintenance saves both money and hassle – don't delay repairs.
