What Causes the Purge Pump to Fail?

[AxelRose]

Generally, damage to the purge pump involves a malfunction of the internal motor, which requires professional repair. Additionally, a missing phase in a three-phase power supply can also cause burnout. Below are the impacts of a failed purge pump: 1. Reduced Vehicle Power: A damaged purge pump prevents fuel vapor from the charcoal canister from entering the cylinder, leading to a lower concentration of the combustible air-fuel mixture in the engine, which results in decreased vehicle power output. 2. Increased Fuel Consumption: If the charcoal canister is saturated with fuel vapor but the purge pump fails to expel it, subsequent fuel vapor cannot be recycled, naturally leading to higher vehicle fuel consumption. 3. Environmental Pollution: A damaged purge pump causes fuel vapor to be directly emitted into the atmosphere (as the charcoal canister is already full), making the vehicle's exhaust noticeably smell of gasoline.