What Causes a Strong Gasoline Smell in Car Exhaust?

[DeBarrett]

Car gasoline smell is heavy, which is caused by aging rubber pipes of the carbon canister, gasoline pipe leakage, residual gasoline during fuel pump disassembly, and overfilling of gasoline. The specific reasons are as follows: Aging rubber pipes of the carbon canister: For cars with high mileage, the rubber components in the engine compartment are prone to aging. Residual gasoline during fuel pump disassembly: Disassembling the fuel pump needs to be done inside the car, and during this process, some residue is inevitable. If not cleaned thoroughly, a gasoline smell may also be noticed during vehicle use. Overfilling of gasoline: If gasoline is overfilled, it may flow into the carbon canister through the pipes. The carbon canister, originally used to collect gasoline vapor, will release excess gasoline vapor through the vent holes when gasoline enters. When the air conditioning is in the external circulation mode, the gasoline smell enters the car interior.