My car has all the evap system, canister, and solenoid valve but as I am seeing on internet, people have [a] solenoid valve on their outlet vent on canister too which open and close by ECU to let the excessive vapor escape.
My car doesn't have that and I am having problem with my car [building] air pressure in the fuel tank.
I am really confused, so that means my gas tank itself has a vent line on it and it is connected to the fuel inlet hose and it evaporates the excessive vapor from there? It doesn't make any sense.
In this question I am trying to find out why some cars have vent solenoid valve with their canister and what happens when some don't have that, how do they vent the vapor out then.