Turn on the internal circulation of the air conditioner, and the gasoline smell in the car is very strong.

When the internal circulation of the air conditioner is turned on, the smell of gasoline in the car is very heavy. Treatment: 1) Pull over immediately: Don't panic at this time, pull over first.

2) Get off to find the source of gasoline smell. Here can be divided into two steps: ① First, through the preliminary identification of the smell, the characteristics of the taste can provide a certain basis, if it is only a simple gasoline smell.

Then the possibility of fire is not great, but if it is mixed with pungent rubber smell, there may be signs of fire. If there is a fire, you should put it out quickly and call the fire alarm. ② If there is no other smell, turn on the range hood for specific inspection. Pay attention to ensure personal safety at this time.

3) Rubber pipeline of gasoline purification carbon canister is aging (need to be replaced)

The rubber parts in the engine compartment of old cars are prone to aging. The connection between the carbon canister and the throttle valve is made of rubber tube, which may leak into the engine compartment as long as it ages, so the rubber tube should be replaced in time.

4) Leakage of gasoline pipe joint (need to be fastened/repaired)

When the gasoline pipeline leaks, the smell of gasoline may enter the car along the air conditioning system. Leakage usually occurs at the interface between pipes. Open the engine compartment cover and judge visually, because once a leak occurs, a layer of sludge will appear on the surface after a long time. Need fastening and repair.

Reason:

1, the exhaust gas of the preceding vehicle, some friends are circulating outside, mistaking the exhaust gas of the preceding vehicle for the smell of engine oil, and it is not excluded that there is a problem with the preceding vehicle, resulting in the exhaust gas containing engine oil. In this case, we can turn off the outer loop and turn on the inner loop to smell.

2. The air conditioner is dirty. For example, some oil is adsorbed on air conditioning pipes and air filters. So we need to replace the air filter and clean the air conditioner.

3. When changing oil and filtering the machine, put oil drops on the guard plate or exhaust pipe. After the car starts, the high temperature will evaporate the oil and enter the air conditioning pipeline. However, this kind of situation is usually smelled in a short time.

4. Maintenance negligence, such as changing the oil, not covering the oil cover properly, or changing the gearbox oil, causes the gearbox oil to be thrown out of the exhaust hole.