I have checked everything I could possible think of, Why do I smell gasoline everytime I turn off my car.

Also my gas mileage has severely tanked, I went from 210ish a tank to 140ish. Been noticing it for 2 weeks now. I can not figure out what it is coming from.

2006 WRX wagon. 57k miles.
SPT intake,
AP v.1 stg1 ots map,
spt exhaust.
These are the only mods I see relevent

I haven't done any modifications in the last 6 months.

I have checked gas cap to make sure its tight, I have no cel. I even checked for cel's incase some how my CEL wasnt working. I checked the gas cap gasket. Its in good shape. I checked under the car no leaks. Smell is coming from the outside of the car, from either the back or sides, more potent on the gas tank fill side. Def not coming from engine bay. i dont have any bov or anything.

I dont smell it when the car is idiling, i only smell it about a minute after I have stopped and turned my car off. It doesnt matter if I drove it or or just let it idle. After a while though the smell goes away, mostly when its cool down. And i can smell it in inside just a bit. Not sure if the smell is slightly originating from inside, or if its just wafting in.

Has anyone had this happen or have any idea what is going on?

Thanks,
Ryan

 

Did you check your spark plugs?

 

if it's not coming from engine bay, possibly something to do with the gas tank itself?

Gas evaporates and doesn't necessarily have to leak right? But that's weird how you only smell it when the car is running... hmm. In that case maybe the lines that the fuel travels from tank to engine, because I'm assuming those lines aren't used when the car isn't running.

 

Not yet, its such a pain in the ***, and my 60k is due. i was gonna try to wait the next 2k until i actually hit 60k, but seems that might need bumped up. No misfire codes has helped me semi out-rule spark plugs.

 

Sorry I dont know if I made it confusing, or if you typeod. I dont smell it while the car is running, just after I turn it off, generally a minute or so after. I only smell it for about an hour or so until the car cools down a bit. (i park in the garage)

 

Sorry to hear that, but take care of that before it catches fire.

 

Fuel pump leaking?

Pull the lid open and take a look at the pump to see if everything looks right, or if the smell gets stronger

 

where would it be leaking too? it smells much stronger outside, but i dont see a physical drip, probably as previously mentioned its evaporating but from where?

 

have you checked under/around the gas tank?

 

go do some maintenance.

 

maintainence is tip top, aside from getting the 60k done.

Its been driving fine, nothing noticeably different.

 

Ya I got as up close and personal with it as well as i could without taking the inside apart. like i said though, I am almost 100% sure the smell is not originating from inside.

and havent seen any drips of anything.

 

Take it to LIC and have them do the 60k since its highly unlikly there is a DIY fix if you've checked everything. Also 60k service says to replace the fuel filter and inspect the fuel line IIRC

 

I had a small leak from a fuel line under my inlet for awhile, took me a day or 2 to find it, all it was was a loose line, had to pull the inlet and tighten it then it was fine, also not sure how you drive but I've notices my milagw go down as well, I think it could be from "driving" In the rain.... If you catch my drift... Ha

 

check the fuel pump assembly area