Fuel Evaporation System: Description

The Fuel Evaporation system is used to prevent fuel vapors (hydrocarbons) from entering the atmosphere. Activated charcoal in the carbon canister absorbs fuel vapors given off by the fuel system.

The system consists of a fuel tank with a positive sealing filler cap, carbon canister with purge control valve, fuel check valve, canister purge and vacuum signal lines, and vapor vent lines.

High Altitude Pickup models use a vent switching valve.

Fig 1: Fuel Evaporation System (Pickup - Except Federal High Altitude Models)

Fig 2: Fuel Evaporation System (Stanza)

Fig 3: Fuel Evaporation System (Maxima)

Fig 4: Fuel Evaporation System (300ZX)