What is the reason for the strong smell of gasoline in the car during driving?

1, rubber tube of carbon canister is aging.

The engine compartment of some cars with long age or long mileage is prone to signs of aging. The connection between the carbon canister and the throttle valve is realized through a rubber pipe. Once aging, it may leak. The gasoline vapor that should have entered the intake manifold along the pipeline leaked into the engine compartment, and the air conditioning system became the way for the gasoline smell to enter the car.

Countermeasures: Replace related aging hoses.

2. There is a leak in the gasoline pipeline.

If the gasoline pipe does leak, the smell of gasoline may enter the car along the air conditioning system. Leakage usually occurs at the interface between pipes. When you open the engine compartment cover, you can generally see that if there is leakage at the interface, after a period of time, dust will be adsorbed on the surface to form sludge. In addition, touch the pipe joint to see if there is any leakage.

Countermeasure: Fasten and repair the interface.

3. There are residues when disassembling the gasoline pump.

Dismantling the gasoline pump needs to be done in the car, and some residues will inevitably appear during this process. If you don't clean it up, you may smell gasoline during the use of the car.

Generally, the disassembly and assembly of the gasoline pump will only be involved when the gasoline pump is replaced or related failures occur. The replacement cycle of gasoline pump is about 6,543,800 kilometers, and there are not many opportunities for car owners to encounter such maintenance projects. However, now more automobile manufacturers begin to install gasoline filters in fuel tanks and connect them with gasoline pumps. The replacement cycle of gasoline filter is about 40 thousand kilometers, so the disassembly and assembly of gasoline pump will be involved in this process.

Countermeasures: Go back to the repair shop to check whether the gasoline pump is installed correctly and whether the surrounding area needs further cleaning.

It was introduced into the car from the outside.

Although this situation is rare, it is not impossible.

Countermeasures: The air conditioner adopts internal circulation mode, and the skylight is opened to exhaust air.

5. It's too full

Some riders have the habit of refueling, and they are satisfied with letting the oil gun jump several times. Xiao I suggested that riders who have this habit should check the fuel filler first to see if there are any signs of air leakage. If not, check the carbon canister, vent and other parts. If the gasoline is overfilled, the gasoline may enter the carbon canister along the pipeline, and the carbon canister originally used to collect gasoline will release excess gasoline vapor from the vent after invading the gasoline. When the air conditioner is in the external circulation state, the smell of gasoline will enter the car.