I have an 02 wrx wagon, all stock besides cob 1
just hit 100k
I am getting a P0456 code, Evaporative Emission Control System Leak Detected (small)
P0457 Evaporative Emission Control System Leak Detected (Fuel Cap loose or off)
at first i figured bad fuel cap, so i just picked one up from autozone which didn't work
so i picked one up from subaru, also didn't work
i have been under the car and looked at the solenoid wiring and filler neck, and as far as i can tell it all looks good.
i also had the dealer run a smoke test with no results.
however this just caught my eye
the lass few times filling up, i found the inside of my fuel cap and filler neck are soaked in gasoline as well as the rubber seal.
and by the inside i mean from the seal to the threads
and yes i always tighten the gas cap very well
i dont really know much about the fuel system, but i dont think that there should be pressure forcing gasoline to and even through a well sealed gas cap.
so i am stuck on this one, please help