What Causes the Smell of Gasoline During Cold Start?

[DiGenesis]

The reasons for smelling gasoline during a cold start are as follows: 1. Fuel tank leakage: Sometimes during winter when starting the car, a very strong gasoline smell may indicate that the car's fuel tank or fuel line is leaking. However, this cause of gasoline smell is very rare. Generally, unless the car has suffered a significant collision, this situation will not occur. You can determine if the fuel tank is leaking by checking whether there are any oil drops on the parking area or the ground. 2. Warming up the engine: When warming up the engine in winter, if too much gasoline is injected during engine operation, it may not be completely burned and is emitted outside the car, leading to a strong gasoline smell in such cases. 3. Carbon buildup in the fuel injectors: Over prolonged use, carbon deposits can form in the car. If carbon buildup blocks the fuel injectors, the injected gasoline cannot atomize properly, resulting in droplet-like gasoline that fails to burn completely. Typically, the gasoline smell caused by this issue is relatively mild and not very strong, but you may noticeably feel a reduction in the car's power.