What will happen if the carbon canister solenoid valve is broken?
2 Answers
If the carbon canister solenoid valve is damaged, the car will experience increased fuel consumption and abnormal mixture concentration. The function of the carbon canister solenoid valve: The carbon canister solenoid valve is a device used to reduce air pollution caused by fuel evaporation emissions and simultaneously improve fuel efficiency. When the engine is turned off, the vehicle's activated carbon canister begins to absorb fuel vapors evaporating from the fuel tank and firmly locks them in the micropores of the activated carbon inside the canister, preventing the fuel vapors from being released into the atmosphere. Hazards of engine idling: When the engine is idling, the temperature and pressure inside the cylinders are relatively low, which prolongs the preparation time for fuel ignition. Additionally, the sealing of the cylinders decreases at this time, making it easier to produce knocking sounds and shortening the engine's service life.
With years of experience in car repairs, I've seen many vehicles with faulty charcoal canister purge valves. The most obvious sign is the persistent illumination of the check engine light on the dashboard, indicating system trouble codes, commonly P0440 or P0455. Fuel consumption increases because fuel vapors escape instead of being recycled, leading to unnecessary waste. Starting the car becomes difficult, especially during cold weather when ignition is sluggish. Idle becomes rough, with the engine speed fluctuating unpredictably at traffic lights, which is truly annoying – in severe cases, it may even stall. Sometimes, a gasoline smell lingers after parking, making the garage stink. Delaying repairs may damage the catalytic converter, leading to costlier fixes. I recommend prompt inspection using an OBD scanner for quick diagnosis. Replacing the part usually solves the issue and costs just a few hundred bucks. Regular maintenance can help prevent this problem.
