Whenever I start the engine and allow the vehicle to idle it leak fuel from the charcoal canister.
2002 S500 Mercedes Benz back splashes fuel and leaks fuel from charcoal canister on 2002 Mercedes-Benz S500
Overfilling your gas tank can be a common problem for this. Check your pressure senor and shut off valve
Where would the pressure sensor be located? and are shut off valve