What are the symptoms of a faulty fuel injector?
2 Answers
The symptoms of a faulty fuel injector are as follows: 1. Lack of maintenance in the engine fuel system may cause gum deposits inside the injector, clogged valve orifices, or stuck needle valves. 2. Clogged injector valve orifices can result in no fuel injection or poor fuel atomization, while stuck needle valves can cause post-injection dripping, leading to engine issues such as unstable idling, poor acceleration, and other faults. It can also severely affect the engine's emission performance. 3. Water ingress in the injector connector can cause a short circuit, preventing fuel injection. Cleaning should be ensured during maintenance. 4. The engine may fail to start, run unevenly, or emit heavy black smoke from the exhaust.
When the fuel injector malfunctions, the car starts jerking like it's having spasms. At idle, it shakes violently enough to vibrate the steering wheel, and acceleration feels noticeably sluggish—stepping hard on the gas pedal barely makes the car move faster. Fuel consumption inexplicably skyrockets; what used to be 600 km per tank might drop to just 500 km. Once, my old car suddenly spewed black smoke from the exhaust, and the mechanic said it was due to incomplete combustion caused by a leaking fuel injector. You might also notice a strong gasoline smell, especially when parked. My advice? Don’t delay—head straight to a professional repair shop for inspection. After all, fuel injectors affect engine longevity, and neglecting them could even damage the catalytic converter.
