* Fuel pressure regulator: A faulty fuel pressure regulator can cause too much fuel pressure, resulting in a gas smell.
* Fuel line: A cracked or damaged fuel line can leak fuel, resulting in a gas smell.
* Gas cap: A loose or missing gas cap can allow fuel vapors to escape, resulting in a gas smell.
* Evaporative emissions control system: A malfunctioning evaporative emissions control system can cause fuel vapors to escape, resulting in a gas smell.
* Oxygen sensor: A faulty oxygen sensor can cause the engine to run rich, resulting in a gas smell.
* Catalytic converter: A faulty catalytic converter can cause the engine to run rich, resulting in a gas smell.