What is the most obvious phenomenon of a broken canister solenoid valve?

If the solenoid valve of the activated carbon canister of the automobile is damaged, the activated carbon canister will not be able to open and close, which will directly lead to the aggravation of fuel consumptionFrom time to time, you will hear the sound of "clicking" in non-idle conditions, and when you step on the accelerator to accelerate, the idle speed is high and low and the acceleration is weak.

Because the activated carbon canister solenoid valve works intermittently, when the hose on the solenoid valve of the carbon canister is unplugged, when waiting for the solenoid valve to work, block part of the solenoid valve with your hand, if you can feel that the solenoid valve has been inhaling or not inhaling and not responding, this means that the solenoid valve is damaged. The normal carbon canister solenoid valve should be interstitial suction, at this time it can be judged that the solenoid valve is damaged, and it is recommended to replace it to improve the current situation.

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When the car starts, the solenoid valve controls the activated carbon canister to open, and the absorbed fuel vapor is poured back into the intake manifold to be burned, so as to achieve the purpose of fuel saving and environmental protection. When the solenoid valve of the carbon canister is damaged, the canister cannot be opened or closed, and the solenoid valve of the carbon canister cannot be opened, which will cause the fuel vapor to be unable to enter the cylinder for combustion.

However, if the damage cannot be turned off in normally open mode, the mixture concentration is too concentrated and the combustion is not sufficient, and most of the unburned fuel is discharged out of the car, resulting in fuel waste and increased fuel consumption. We give the following explanation for the statement that there is a replacement cycle for activated carbon canisters. Due to the physical nature of activated carbon, it is able to adsorb gases repeatedly.

It is sucked into the cylinder and burned when the engine is working, so if the outside of the activated carbon tank is not damaged, there is generally no major problem and it can be used for a long time. In addition, the replacement cycle is not clearly marked in the manual, so it is recommended to replace it if there are symptoms of damage.

If the solenoid valve of the canister is broken, it will cause the vehicle to drive abnormally; Step on the accelerator and the smell of gasoline in the car is large.

Several major symptoms of a broken canister solenoid valve:

1. Abnormal noise of vehicle driving.

Fault phenomenon: In the case of non-idle operation of the engine, that is, when the engine is running at more than 800 rpm, sometimes the sound of "da-da" can be heard.

2. Step on the accelerator and the smell of gasoline in the car is large.

Fault phenomenon: when stepping on the accelerator to accelerate, the smell of gasoline in the car is relatively large.

3. The engine idle speed fluctuates high and low, and the acceleration is weak.

Fault phenomenon: After the engine starts, the idle speed is regularly high and low, and the car accelerates weakly.

Precautions for broken canister solenoid valves:

If the canister solenoid valve is broken, the fuel consumption of the car will rise, and the mixture concentration may be abnormal. If the solenoid valve of the canister is damaged, it is recommended to replace it immediately, otherwise it will affect the normal operation of the car engine.

The main function of the carbon tank is to adsorb and filter the gasoline vapor inside the fuel tank, and let the fuel vapor enter the engine to participate in combustion through the solenoid valve control, so as to reduce fuel consumption and prevent the fuel tank pressure from being too high; Other causes of failure are clogged canisters, which are characterized by gas ejecting every time the tank cap is opened.

Summary. Hello, I am your exclusive technician, attentive, careful, dedicated to answering your car questions, for you to find the corresponding problem solutions and solutions! Based on your question, make the following answers:

If the solenoid valve of the carbon canister is broken, the following symptoms will appear: 1. The engine is difficult to fire, and it is easy to turn off the fire, often to ignite twice, and it is easy to extinguish again after the fire; 2. There will be abnormal noise when the vehicle is driving, which is mainly manifested in the non-idle situation, and sometimes the sound of "da-da" can be heard; 3. Fuel consumption is increased, and the smell of gasoline in the car is large; 4. The engine idle speed fluctuates high and low, and the acceleration is weak.

Canister replacement time.

Hello, I am your exclusive technician, attentive, careful, dedicated to answering your car questions, for you to find the corresponding problem solutions and solutions! According to your question, make the following answers: The following symptoms will occur when the carbon canister solenoid valve is broken:

1. The engine is difficult to ignite, and it is easy to extinguish, often it is necessary to ignite twice, and it is easy to extinguish again after ignition; 2. There will be abnormal noise when the vehicle is driving, which is mainly manifested in the non-idle situation, and sometimes the sound of "da-da" can be heard; 3. Fuel consumption is increased, and the smell of gasoline in the car is large; 4. The engine idle speed fluctuates high and low, and the acceleration is weak.

2. Fuel vapor or oil droplets appear at the atmospheric pressure outlet of the carbon canister; Or take out a canister filled with gasoline.

4. The engine cannot be started when the engine is turned off, and the driving sound is abnormal.

5. Dial out the tube of the fuel tank, and then you can feel the suction phenomenon at the interface of the carbon canister, and this suction phenomenon is intermittent, and the frequency is about two or three times per second; If there is no insution, the cartridge solenoid valve is stuck in the closed state.

Working principle of carbon canister solenoid valve:Since the tank is sealed, fuel consumption creates negative pressure inside the tank, and under negative pressure, gasoline evaporates more easily than at normal pressure.

When the engine starts, the solenoid valve installed between the activated carbon tank and the intake manifold opens, and the oil vapor in the activated carbon tank is transported to the engine as fuel for combustion. Not only does it reduce emissions, but it also reduces fuel consumption.

When you step on the accelerator to accelerate, the smell of gasoline in the car is relatively largeAt this time, it is necessary to pay special attention to whether the pipeline of the carbon canister system is broken, if the pipeline is broken, the gasoline vapor will be directly discharged into the atmosphere along the broken crack, resulting in the phenomenon of gasoline smell in the car. If there is a leak in the line, it will cause air to enter the engine intake tract instead of fuel vapor.

Note: There is no fixed replacement cycle for car canisters, and there is no indication on the vehicle instruction manual that the canisters should be replaced as often as car owners, as long as the canisters are not damaged, there is no need to replace them.

If the engine idle speed fluctuates regularly, and the car is struggling to accelerate, pay attention to whether it is because the air inlet and filter of the carbon canister have been blocked.