Fuel injectors are components of a car’s fuel system that are responsible for delivering fuel to the engine. They spray fuel into the intake manifold or directly into the combustion chamber, where it is mixed with air and ignited to power the engine.

Common signs that your car’s injectors may need to be replaced include rough idling or stalling, reduced engine performance, increased fuel consumption, and a check engine light. A professional mechanic can perform tests to determine if the injectors are functioning properly.

The lifespan of a fuel injector can vary depending on factors such as the make and model of the car, driving conditions, and maintenance practices. However, in general, injectors should be replaced every 100,000 miles or so, or if they are showing signs of wear or damage.

Replacing a car’s fuel injector typically involves removing the fuel rail and old injectors, installing new injectors, and reassembling the fuel system. It is a complex process that should only be performed by a professional mechanic.

Replacing a car’s fuel injectors can help to improve engine performance, reduce fuel consumption, and lower emissions. It can also help to prevent more serious engine problems down the line and extend the lifespan of the engine.