Dodge Durango fuel smell in air vents when idling, unresolved after multiple service visits on Dodge Durango

Some Dodge Durango owners report experiencing a fuel smell in the air vents while idling, which may be attributed to several potential causes. These issues can stem from a fuel leak originating from components such as fuel lines, fuel injectors, or the fuel filler neck. Additionally, a worn seal on the fuel cap or a faulty fuel pressure regulator could contribute to the gas smell infiltrating the cabin. Some owners have noted that over-fueling the vehicle can result in a rich air/fuel mixture, triggering the check engine light and causing a fuel odor. If the smell intensifies when stopping at lights or stop signs, this may indicate a more urgent problem, such as a disconnected vapor fuel line hose. It is essential for owners to check the evaporative emissions system for leaks in components like the fuel filler cap, fuel filler tube, fuel lines, purge valve, and charcoal canister. Given the persistence of these issues despite multiple service visits, a thorough inspection of these components is recommended to identify and resolve the root cause of the fuel smell.