What are the symptoms of a damaged fuel injector?

[AveryMarie]

The symptoms of a damaged fuel injector include: 1. Abnormal vehicle shaking; 2. Excessive vehicle emissions; 3. Black smoke from the exhaust pipe; 4. Weak acceleration; 5. Accelerated wear of piston rings. A fuel injector is an electromagnetic valve that controls the entry of fuel into the engine by opening and closing, facilitating more complete fuel combustion. The method for cleaning a fuel injector is: 1. Hang the cleaning device on the front hood of the car; 2. Locate the engine's fuel inlet and return pipes; 3. Disconnect the return pipe from the engine and use a suitable plug to block it; 4. Connect the inlet pipe to the outlet pipe of the cleaning device; 5. Open the fuel tank cap, remove the fuel pump fuse to stop the fuel pump from working, and the cleaning process is complete.