1. Fuel Leak: Check for any visible signs of fuel leaks, such as droplets or puddles of fuel under the car. It is important to inspect the fuel lines, fuel filter, and fuel injector seals for any cracks or damage.
2. Faulty Fuel Cap: A loose or damaged fuel cap can allow fuel vapors to escape. Ensure that the fuel cap is properly tightened after refueling.
3. Evaporative Emissions Control System (EVAP) Issues: The EVAP system is designed to capture and store fuel vapors and release them into the engine when needed. A faulty EVAP system, such as a malfunctioning purge valve or canister, can cause fuel vapors to leak into the cabin.
4. Exhaust System Problems: A leak in the exhaust system, such as a hole in the exhaust pipe or a damaged catalytic converter, can allow exhaust fumes, including the smell of petrol, to enter the cabin.
5. Fuel Injector Issues: Leaking or faulty fuel injectors can cause excess fuel to enter the engine, leading to a strong smell of petrol.
Since you mentioned the smell is only present when the car is idling, it is possible that the issue is related to the idling fuel mixture or a component that is active during idling.
It is recommended to take your car to a qualified mechanic for a thorough inspection and diagnosis of the problem. They can safely inspect for leaks, test the EVAP system, and identify any issues with the exhaust system or fuel injectors.
