What Causes the Strong Gasoline Smell When Turning on the Car Heater?

[SanIan]

The reasons for a strong gasoline smell when turning on the car heater are: 1. Exhaust gas leakage from the external engine; 2. Foreign objects in the air intake; 3. The air filter is too dirty; 4. Mold growth in the air conditioning ducts and evaporator. The working principle of car air conditioning heating is: When the engine coolant temperature becomes too high, the refrigerant gas enters the condenser, where pressure and temperature decrease, causing the refrigerant gas to condense into a liquid and release heat. Methods for maintaining car air conditioning include: 1. Avoid setting the temperature too low during use; 2. Adjust the direction of the air vents; 3. Do not use it for extended periods; 4. Occasionally turn on high fan speed; 5. Turn off the air conditioning when driving at low speeds.