The reasons for the strong smell of gasoline after starting a car include: insufficient combustion of gasoline, aging of rubber pipes, and leakage at the connection of gasoline pipes.
Due to insufficient combustion of gasoline: The gasoline smell is very strong when the car starts, and if it disappears after heating up, it is a normal phenomenon because the combustion effect is not good when the car first starts. When starting a cold car, the water temperature and exhaust pipe temperature are low, and the mixture is thicker at this time. Therefore, some of the mixture cannot be completely burned, and when discharged from the exhaust pipe, a heavier gasoline smell will be smelled.
Aging of rubber pipes: The rubber pipes in the engine compartment will age after long-term use, which can easily occur in older vehicles. Once they age, gasoline will leak into the engine compartment, and the air conditioning system will allow gasoline odor to enter the car. Therefore, once the rubber pipes age, they need to be replaced in a timely manner.
There is a leak at the connection of the gasoline pipe: There is a leak at the interface of the gasoline pipe, causing the gasoline odor to enter the car through the air conditioning system. If a gasoline odor is found in the car, the gasoline pipe interface should be checked and repaired in a timely manner.