Where is the Wuling Hongguang carbon canister solenoid valve located?
2 Answers
The Wuling Hongguang carbon canister solenoid valve is located inside the engine compartment, at the upper left corner of the engine. The carbon canister solenoid valve is connected to the desorption port hose of the carbon canister and is used to control the fuel vapor desorption time and the negative pressure level. Generally, the desorption port is relatively thick, so you can locate the solenoid valve by following the thicker hose. The working principle of the carbon canister solenoid valve is that it controls the purging function of the carbon canister through the modulation of electrical pulse width. In other words, the ECU (Engine Control Unit) opens or closes the solenoid valve's grounding circuit at a certain frequency based on different engine operating conditions. The ECU manipulates a normally closed solenoid valve to control the vacuum purging of the carbon canister. Symptoms of a faulty carbon canister solenoid valve: Gasoline smell inside the car: When the solenoid valve is damaged, the engine cannot draw fuel vapor from the carbon canister in time, causing the vapor to accumulate in the carbon canister until the activated charcoal becomes saturated and can no longer absorb it. Jerking during sudden acceleration: During acceleration, the ECU utilizes the fuel vapor from the carbon canister. When the ECU opens the carbon canister solenoid valve, it reduces the fuel injection amount accordingly to maintain the overall air-fuel mixture concentration. If the solenoid valve fails to open while the ECU reduces the fuel injection, the mixture becomes too lean, resulting in insufficient power and jerking.
Speaking of the location of the Wuling Hongguang's carbon canister purge valve, I've repaired quite a few similar domestic vehicles. Basically, it's in the engine compartment—to be more specific, it's usually installed on the left side or near the firewall, connected to the carbon canister. After you pop the hood, follow the fuel lines and you'll spot a small black box with an electrical connector—that's the purge valve. Why there? Because it needs to control fuel vapor recirculation, and being close makes it easier to operate. If this part fails, the car might have trouble starting or trigger a warning light. I recommend checking it during routine maintenance to prevent clogging. On older Hongguang models, the location is fixed, but newer ones (post-2020) might have it moved slightly forward for space optimization. If unsure, always consult the service manual or scan with a diagnostic tool to avoid messing with the wiring. Bottom line: keeping it clean extends its lifespan.
