An engine experiencing rough idle, starting issues, stalling, misfiring, or increased fuel consumption may have a bad injector. Injectors are electronic components and can also suffer from electrical or computer-related issues, clogging due to debris in the fuel, or other factors which may affect the fuel delivery of more than one injector. Symptoms of Bad Fuel InjectorsĮngines will typically have one fuel injector per cylinder, and in most cases, failure will only affect one injector at a time. Fuel injection systems are one of the main catalysts for improved performance and fuel efficiency in modern vehicles. Modern vehicle systems typically also meter the amount of fuel delivered through the fuel injectors with the help of the vehicle's electronic control module (ECM).įuel injectors replaced carburetors as the primary components of fuel delivery, and nearly all modern cars since the 1980s are equipped with fuel injection systems because they provide more precise control over the timing and the amount of fuel injected into the engine.
The fuel injectors are responsible for controlling the amount of fuel that enters the engine and the timing of its delivery. Fuel injectors are components of the fuel delivery system in a gasoline or diesel engine that atomize the pressurized fuel and spray it into the engine's combustion chamber where it's mixed with air for combustion.
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