Fuel smell from hear vents

I would say park in a place you can see a leak.
When engine is cold turn key on the fuel pump should put pressure on fuel line to engine. If you don't smell or see gas any where. crank engine see if you can smell or see gas under the hood or car. If there is still no sign outside it must be bringing it in from your vents. the vents let outside air in. so the gas leak should be around or in front of the vent intake air. Sorry I can not be of more help.

Possible leaky fuel injector/regulator/fuel line. Possible disconnected/loose fuel purge/vent line. Possible leaky fuel filler tube or fuel tank. You will need to have the fuel system/lines inspected to determine source of smell. Not something I would put off as a major leak could develop and spill fuel on hot engine/exhaust causing fire

There is a vent on some fuel tanks. As gas gets heated, either from the afternoon heat or from driving, it expands. If your tank is full or close to it, the vapors can escape through the filler tube or some have another vent tube near the filler tube

Usually, what you smell inside the car is coming thru the vent from the engine compartment.
So it could be a leak around the engine or the vapor canister. Its possible the canister gets overloaded from time to time when the computer vents the gas tank to the canister. A very small leak can be a very strong smell inside the car.

Hi Doritelberg, If the fuel consumption of your vehicle has increased or there is any sign of a misfire, I believe that one of the injectors may be leaking. For fuel leakages on fuel injected vehicles, it is better to check while the engine is running as the fuel line is pressurized in that state. It would be helpful to know if the smell started after a fuel filter was replaced and what other symptoms, if any you are experiencing with your vehicle? Regards John

Was fuel smell present before you had fuel pump replaced? If yes I would sugest you drop tank and see if fuel vent hose is plugged forcing fuel back pressure line to vent through cap. If fuel smell was not present before you replaced fuel pump and seal. I would suggest you drop tank back out and check all fittings and hose conections. also if you still have old sending unit you could check to make sure they are exactly the same. As Sometimes you have to pull relief valve from old sending unit and install it in the new one, as some sending units wont have one in it. and some will have one that is regulated at a different fuel pressure. hope this helps Vic

auto tech for 15 years you have a crack on the fuel pump return line on the fuel pump assemble I have done many Taurus with the same problem the fuel puddles up on top of the tank and smells bad replace the whole fuel pump assemble and the smell will go away.

sounds like it could be a leaking fuel rail. you should fix this very soon. if it is it is a fire hazard. that is if it is under hood and not underneath. look under vehicle and check for wet spots.

thats just the tank venting as you are filling and driving off for the first time, nothing to worry about unless the smell continues then it could ither be fuel cap or maybe a perished fuel hose. hope this helped.

I have seen a 2004 Grand Am that had a very light leak around one of the fuel injector o-ring seals allowing fuel to seep out onto the lower intake which then vaporize when the engine would get hot making the smell.