A rotten egg smell is a horrible and foul odor that can make your car inhabitable. If you have that smell in your car, it could be a sign of a severe underlying issue. The smell is usually from hydrogen sulfide, or sulfur, within the fuel. The following are some things that can cause your car to smell like rotten eggs:
Broken Catalytic Converter
The foremost reason why you have a rotten egg smell in your car is that you have a broken catalytic convertor. The converter is responsible for transforming the hydrogen sulfide or sulfur in your vehicle into sulfur dioxide, which is a colorless gas.
The converter changes exhaust gasses into harmful odorless gasses if they enter the car's interior. When the catalytic converter is broken, it cannot function properly hence the smell of rotten eggs.
If the catalytic converter itself is not damaged, another car part may be adversely affecting it.
Fuel Pressure Sensor or Fuel Filter Damage
The fuel pressure sensor is responsible for regulating fuel use in a car. If a fuel pressure regulator fails, it floods the catalytic converter with too much oil.
If the converter is full of oil, it does not properly process the exhaust gasses resulting in a foul odor. The catalytic converter may also have a buildup of byproducts, making it overheat and producing a rotten egg smell.
Old Transmission Fluid
You must regularly change the old transmission fluid in your car. If you do not flush it, old transmission fluid can leak into other parts of the vehicle.
The leak may mix with other chemicals resulting in a rotten egg smell. However, this only happens in manual cars.
If you need catalytic converter repair, give Davenport Motor Company a call today!