EVAP System Canister
The EVAP System Canister is filled with activated carbon pellets that store the fuel vapors from the fuel tank. Engine vacuum purges this stored fuel vapor from the canister under normal driving conditions.
Each canister uses three ports. These include:
- Purge Port - The purge port is connected to engine manifold vacuum through the purge solenoid which is controlled by the PCM. Through this connection, the stored fuel vapors are drawn into the engine.
- Tank Port - The tank port allows fuel vapors to enter the canister as they escape from the fuel in the tank.
- Vent Port - The vent port allows air to enter or exit the canister.