K 1500 Truck 4WD V8-350 5.7L (1986)
Fig. 70 Charcoal canister. 1987 V6-262, V8-305, 350 & 454 high alt.
These systems Figs. 65 through 70, transfer fuel vapor from the fuel tank to an activated charcoal canister to hold the vapors when vehicle is not
running. When engine is running, fuel vapor is purged from the charcoal canister by intake air flow and consumed during normal combustion. The fuel
tank has a non-vented fuel cap and a single vent pipe to the canister.
