The dangers of filling up the tank

Experienced drivers all know that you cannot fill the car’s tank too full when refueling. Overfilling the tank will make the entire car appear to be more fuel-consuming. In addition, overfilling the tank will cause gasoline to spill, increasing the risk of fire and causing certain damage to the car’s components. In addition, if the smell of gasoline enters the car, it will affect the air inside the car and cause certain harm to human health. Let’s take a look at this aspect.

The dangers of overfilling the tank

1. Risks of open flames

When the tank is filled too full, the volume of gasoline will expand and burst the tank. Therefore, the car is designed with vents. If the tank is overfilled, the oil will overflow through the vents. Moreover, gasoline is very volatile and will ignite instantly if it encounters an open flame. Causing irreparable losses.

2. Blocked vents

Once the vent hole is blocked, negative pressure will be generated in the fuel tank, resulting in poor oil supply or even no oil supply. If your car's engine fails to start right after refueling, or it jumps up and down when driving at high speed, it may be because the fuel tank is too full.

3. Damage to vehicle parts

Filling the car with too much gasoline will definitely increase the overall weight of the car and increase fuel consumption. In addition, if it is filled too full, it is easy for gasoline liquid to enter the pipeline, which will not only damage the carbon canister, but also flow into the airway along the pipeline, causing the spark plug to malfunction and even resulting in the vehicle being unable to start.

4. Prone to cancer

The activated carbon canister of gasoline is carcinogenic and is usually located near the external circulation air inlet. When the oil is too full, the carbon canister will be saturated and the pressure will be too high, so it will release the pressure and exhaust. The air containing gasoline will enter the car, and the uncomfortable "gasoline smell" will continue to surround you. The composition of oil and gas has been proven to contain carcinogens such as benzene, which will inevitably cause harm to the bodies of passengers over time.

So we can't fill it up, but we have to know how much to add?

1. Don't fill up a new car's tank all at once for the first time, otherwise the oil float and sensor may malfunction, causing the fuel gauge to be distorted, just like a 100-kilogram fat man suddenly jumps onto a new 100-kilogram scale.

2. For safety reasons, fill the tank until the nozzle jumps. It is not recommended to fill the tank to the top. There is no need for the gas station attendant to lift the gas gun out a little bit and then continue to refuel after the gas gun jumps out.