The activated carbon filter prevents the penetration of harmful fuel vapors from the fuel tank into the atmosphere. Fuel vapors accumulate in an activated carbon canister - an adsorber and, when the engine is running, are burned in the cylinders. The most common symptom of a malfunction in the evaporative emission system is a strong smell of gasoline in the engine compartment. Inspect the activated charcoal canister located on the bulkhead of the engine compartment and the system hoses.
To test the operation of the system, place your hands under the evaporative emission canister while the engine is running at normal operating temperature and then the engine speed is slowly increased. If air movement is felt under the base of the canister, the evaporative emission system is working properly.