The charcoal canister collects evaporated fuel from the fuel tank, and then periodically the purge control solenoid will open the valve on top of the canister, at which time the engine's vacuum pulls the gases out and burns them off.
The charcoal canister collects evaporated fuel from the fuel tank, and then periodically the purge control solenoid will open the valve on top of the canister, at which time the engine's vacuum pulls the gases out and burns them off.