1. Replace coil. When the coil is burnt out, the solenoid valve does not produce oil after being energized, and the shape of the coil is abnormal, and the mandrel inside the coil has no electromagnetic attraction, resulting in negative pressure in the fuel tank. It can be solved by replacing the electromagnetic coil.

2. Clean the pilot valve. It may be that there is a foreign body at the pilot valve or the coil nut is loose, resulting in abnormal sound and negative pressure in the fuel tank. The solution is to clean the pilot valve, remove foreign matter, and then tighten the nut.

3. Add lubricating oil. It may be that the solenoid valve is stuck when working due to insufficient lubricating oil. Proper addition of lubricating oil can solve this problem.

4. Clean up foreign objects. There may be foreign objects, which may cause the solenoid valve to run smoothly. Just clean up the impurities and foreign bodies.

5. Clean the carbon canister. It may be that the carbon canister is too dirty, resulting in oil blockage and negative pressure in the fuel tank. Solving the problem requires cleaning up the dirt inside.

6. Replace the carbon canister. If the carbon canister is really dirty and the oil circuit is difficult to clean, you can replace it with a new one to solve this problem.

Automobile fuel tank is the full name of automobile fuel tank. Automobile fuel tanks can be divided into iron fuel tanks and aluminum alloy fuel tanks according to materials.

Aluminum alloy fuel tank has more advantages than new materials such as iron in strength and corrosion resistance, and has become the first choice for large buses and heavy trucks with high fuel consumption and high fuel quality requirements. Million car purchase subsidy