What is the reason for the non-working purge pump in the new three-cylinder Excelle?

[VeraFitz]

New three-cylinder Excelle purge pump not working is caused by purge pump failure. Control gas concentration: The main function of the carbon canister purge pump is to blow fuel vapor from the carbon canister into the intake pipe and control the concentration of the combustible mixture. Damage to the purge pump will prevent fuel vapor in the carbon canister from entering the cylinder, causing the engine's combustible mixture concentration to decrease, thereby affecting the vehicle's power output. Purge pump damage: If the carbon canister is filled with fuel vapor but the purge pump fails to blow it out, this will affect the recycling of subsequent fuel vapor, naturally leading to increased vehicle fuel consumption. If the purge pump is damaged, fuel vapor will be directly discharged into the atmosphere (since the carbon canister is already full at this point), and a noticeable gasoline smell can be detected in the vehicle's exhaust.