What Causes a Strong Gasoline Smell in the Car?
2 Answers
There are several reasons for a strong gasoline smell in the car: 1. Aging of the carbon canister rubber hose: In cars with high mileage, rubber components in the engine compartment are prone to aging. 2. Gasoline pipe leakage: If there is a leak in the gasoline pipe, the smell of gasoline may enter the car through the air conditioning system. 3. Overfilling the fuel tank: If the fuel tank is overfilled, gasoline may flow into the carbon canister through the pipes. The carbon canister, which is originally designed to collect gasoline vapors, will release excess gasoline vapors through the vent when filled with liquid gasoline. When the air conditioning is in the external circulation mode, the gasoline smell can enter the car.
I've experienced a strong gasoline smell in my car, which usually indicates fuel leakage or other issues. The most common causes are a loose fuel tank cap or aged rubber gaskets, allowing gasoline vapors to escape into the air. Cracked fuel lines or leaking fuel injectors are also culprits, especially in older vehicles where materials degrade easily. Another possibility is a malfunctioning evaporative emission system, such as a damaged EVAP canister or valve, preventing gasoline vapors from being properly captured. Residual gasoline in the engine bay evaporating under high temperatures can also spread the odor. For safety, I recommend first checking if the fuel tank cap is tightly secured, then inspecting fuel lines and under the engine for any oil traces. If the smell persists, seek professional repair immediately, as gasoline is highly flammable and poses a serious fire hazard. Regular maintenance should include attention to these components.
