What are the symptoms of a failed charcoal canister?

[AsherLynn]

Symptoms of a failed charcoal canister include: abnormal driving noise, jerking during sudden acceleration, noticeable gasoline odor, weak acceleration, fluctuating engine idle speed, engine stalling, and difficulty starting. The functions of the charcoal canister are: 1. To reduce gasoline evaporation from the fuel tank and carburetor; 2. To absorb fuel particles through active materials inside the canister. The principle of the charcoal canister is that after the engine is turned off, gasoline vapor mixes with fresh air inside the canister and is stored in the activated charcoal canister. When the engine starts, the solenoid valve between the activated charcoal canister and the intake manifold opens, allowing the gasoline vapor in the activated charcoal canister to be drawn into the cylinder by clean air under the vacuum of the intake pipe for combustion.