What are the effects of a faulty purge pump?
2 Answers
The effects of a faulty purge pump include: 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 the engine's combustible mixture and consequently reduced 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 resulting in higher fuel consumption; 3. Environmental pollution. While a faulty purge pump is not a major issue, it still requires timely repair. The purge pump in question is typically the charcoal canister purge pump, which, like the charcoal canister solenoid valve, is very important.
After driving my old car for so many years, a faulty purge pump has caused significant issues. The most noticeable effect is the sudden spike in fuel consumption because the fuel vapor isn’t being properly processed, reducing engine combustion efficiency. In city driving, my usual 10 liters per 100 kilometers jumped to 12, which really hurts the wallet. The engine also starts acting up—cold starts become difficult, RPMs fluctuate, and sometimes it even shudders at red lights, making the driving experience terrible. On top of that, excessive emissions mean gasoline fumes seep into the cabin, not only causing pollution but also making me feel dizzy. If the engine warning light comes on and I don’t fix it, the car won’t pass the annual inspection, and fines might follow. Getting it checked and replacing the pump early saves a lot of hassle. Otherwise, prolonged neglect could damage other engine components, doubling the repair costs.
