What are the effects of a faulty purge pump?

[McPaislee]

The impacts of a faulty purge pump are as follows: 1. Reduced vehicle power: A damaged purge pump prevents fuel vapor from the charcoal canister from entering the cylinders, leading to a lower concentration of combustible air-fuel mixture in the engine, which results in decreased vehicle power output; 2. Increased fuel consumption: If the charcoal canister becomes saturated with fuel vapor and the purge pump fails to expel it, subsequent fuel vapor cannot be recycled, naturally causing an increase in vehicle fuel consumption; 3. Environmental pollution: The direct release of fuel vapor into the atmosphere causes air pollution. Additionally, during normal engine operation, it may inhale pure air instead of fuel vapor, leading to an overly lean air-fuel mixture.