How to Identify a Faulty Charcoal Canister?
1 Answers
Methods to identify a faulty charcoal canister: The fuel nozzle may click off prematurely during refueling. The charcoal canister is part of the vehicle's evaporative emission control system, serving as a fuel vapor adsorption and desorption device. It helps reduce emissions of gasoline vapors from the fuel tank and carburetor, and is installed between the fuel tank and the engine. Working principle of the charcoal canister: 1. After the engine is turned off, gasoline vapors mix with fresh air inside the canister and are stored in the activated charcoal; 2. When the engine starts, the solenoid valve between the activated charcoal canister and the intake manifold opens, allowing the gasoline vapors in the canister to be drawn into the cylinders by the intake vacuum for combustion, mixed with clean air.