What are the symptoms of a faulty canister purge valve?
2 Answers
Carbon canister purge valve failure symptoms: 1. Abnormal noises while driving, specifically a "clicking" sound that can sometimes be heard when the engine is not idling. 2. Increased fuel consumption accompanied by a strong gasoline odor inside the vehicle. 3. Engine starting difficulties with frequent stalling, often requiring multiple ignition attempts and prone to shutting off again after starting. 4. Fluctuating idle speed and noticeable lack of power during acceleration. Canister purge valve explanation: This is a device installed in automobiles or motorcycles to reduce air pollution caused by fuel vapor emissions while improving fuel efficiency. Therefore, the most common symptoms when this valve malfunctions are increased fuel consumption and a pronounced gasoline smell.
After the carbon canister purge valve fails, the car's idle becomes extremely unstable when running, with the RPM needle dancing up and down. Cold starts are particularly troublesome, requiring several attempts with the key before the engine fires up, which is very laborious. There's always a strong gasoline smell both inside and outside the car, as if fuel has been spilled, and it doesn't dissipate even with the windows open. Fuel consumption also increases significantly; previously, a full tank could cover 600 kilometers, but now it's just over 500, hitting the wallet hard. The check engine light is on, which is quite alarming, so I quickly drove to the repair shop for an inspection. A faulty valve can affect the car's emissions, leading to excessive exhaust that's not environmentally friendly, and ignoring it long-term might damage other components.
