How to judge whether the carbon canister solenoid valve is broken

The main function of the carbon canister solenoid valve
The carbon canister solenoid valve is a component used to control the switch of the carbon canister valve. The carbon canister can effectively prevent vehicle gasoline vapor from entering the air and polluting the environment. When the vehicle is running, the gasoline and diesel stored inside the carbon canister will pass through the air inlet. Step into the main cylinder again and ignite, which not only saves fuel but also prevents environmental pollution. The carbon canister and canister solenoid valve are the most important components of the vehicle, and they should be inspected during normal maintenance.





How to judge whether the carbon canister solenoid valve is broken


Nowadays, almost all vehicles are equipped with carbon canisters and carbon canister solenoid valves. The carbon canister solenoid valve is very effective, so how do we determine if the carbon canister solenoid valve is broken? In fact, when the vehicle's engine cannot start, there is a "clicking" sound when it is stationary, there is a strong smell of gasoline in the car, and the engine power is reduced, it is confirmed that the carbon canister solenoid valve is faulty.

What will happen when the carbon canister solenoid valve is damaged?
1. The engine cannot be started. If the carbon canister solenoid valve fails, the vehicle usually needs to be ignited several times before it can be started, and it is likely to stall even after it is started;
2. An abnormal "clicking" sound occurs. After the vehicle is started, if there is a sharp "clicking" sound, then there is a high probability that there is a problem with the carbon canister solenoid valve. This sound is more obvious when the vehicle is stationary;
3. The smell of gasoline is strong in the car. When the vehicle's central air conditioner is turned on, a strong smell of gasoline will emit from the air conditioner outlet, which indicates that there is a problem with the carbon canister solenoid valve;
4. The engine driving force is reduced. There are many factors that lead to a reduction in engine power, among which damage to the carbon canister solenoid valve is also one of the more common factors.


5. The gun jumps when refueling or gas spurts out when opening the car's fuel tank cap.
6. Gasoline vapor or oil dripping appears at the atmospheric port of the carbon canister.
7. Inability to refuel, frustration, unstable idling, high and low.
8. It cannot start when the engine is turned off, and there is abnormal noise while driving.



How to clean the carbon canister solenoid valve yourself
1. Look for the carbon canister solenoid valve next to the electronic throttle, and then use a vise to disassemble and assemble the carbon canister solenoid valve;
2. Use diagonal pliers to unscrew the screw on the top of the carbon canister solenoid valve, and then the carbon canister solenoid valve can be opened (pay special attention to the fact that there will be a small spring after opening, so do not lose it);
3. When disassembling and assembling the valve core, there will be a lot of carbon particles along with it during the disassembly and assembly process. These carbon particles are what we want to eliminate;
4. Use ethanol to clean the oil circuit board and then reinstall it.


Most carbon canisters are installed between the car's fuel tank and the engine. Its main function is to absorb and filter the fuel vapor inside the car's fuel tank. Through the adjustment of the solenoid valve, the fuel vapor enters the engine to participate in combustion, which will reduce fuel consumption and avoid burning. The pressure in the car's fuel tank is too high.
If the carbon canister solenoid valve fails, it will have a great impact on the vehicle. It must be repaired in the shop as soon as possible to prevent further losses.


The above is the introduction of how to judge whether the carbon canister solenoid valve is broken. If you want to know more related information, please log in to www.diancifa.cc of Sunway Pneumatic.