Evaporative emissions control system check
1. The function of the evaporative emissions control system is to draw fuel vapors from the fuel tank and fuel system, store them in a charcoal canister, then burn them during normal engine operation.
2. The most common symptom of a fault in the evaporative emissions system is a strong fuel odor in or around the vehicle. If a fuel odor is detected, inspect the charcoal canister. Check the canister and all hoses for damage and deterioration (see illustration).
23.2 Check the charcoal canister for damage and the hose connections for cracks and damage; the canister is located at the rear of the vehicle, above the suspension crossmember (typical)
3. The evaporative emissions control system is explained in more detail in Chapter Emissions and engine control systems.