How to Determine if the Fuel Injector is Faulty?

[ValerieAnn]

Methods to determine if the fuel injector is faulty: 1. Black smoke from the exhaust pipe; 2. Uneven operation of each cylinder; 3. Obvious engine vibration; 4. Decrease in engine power; 5. Weak vehicle performance; 6. Unstable idle speed; 7. Increased fuel consumption, weak acceleration, difficulty starting, and excessive vehicle emissions. When the fuel injector is faulty, issues such as injector blockage, failure to open, or inability to atomize fuel can generally cause unstable engine operation or even prevent the engine from running. If the injector has faults like dripping, it can also lead to excessive fuel consumption or even black smoke from the exhaust. Short circuits or open circuits in the fuel injector control circuit also occur from time to time, resulting in the injector failing to spray fuel or continuously spraying fuel, causing the engine to fail to start, operate unstably, or emit heavy black smoke from the exhaust.