Evaporative Emission Control: Notes

Carbon canister storage is used for evaporative fuel control on all vehicles. The function of evaporative emission control system is to store gasoline fumes from fuel tank in a carbon canister until fumes can be drawn into the engine for burning during the combustion process.

Evaporative emission system uses the following components:

• EVAP emission canister
• Fuel tank pressure sensor
• EVAP canister purge valve
• EVAP canister vent solenoid
• Fuel tank
• Fuel filler cap

For specific component application, see appropriate EMISSION APPLICATIONS article. For vacuum hose routing, see appropriate VACUUM DIAGRAMS article.