1. Exhaust leak: An exhaust leak can cause fumes to enter the cabin of your car. Check the exhaust system for any leaks,特に排気マニホールドと触媒コンバータの周り。
2. Fuel leak: A fuel leak can also cause fumes to enter the cabin of your car. Check the fuel lines and fuel tank for any leaks.
3. PCV valve: The PCV valve is a part of the engine that helps to regulate the pressure in the crankcase. If the PCV valve is faulty, it can cause fumes to enter the cabin of your car.
4. Cabin air filter: The cabin air filter helps to clean the air that enters the cabin of your car. If the cabin air filter is dirty, it can cause fumes to enter the cabin of your car.
If you are smelling fumes in your car, it is important to have the problem diagnosed and repaired as soon as possible. Driving with fumes in the cabin of your car can be dangerous, as the fumes can cause you to become drowsy or lightheaded.
