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Fuel injectors are an essential part of your car’s engine, delivering fuel at the right time to ensure clean and efficient combustion. However, without regular maintenance, fuel injectors can develop faults or become clogged, so you need to know how to spot the signs of a bad fuel injector how to fix it. Here, we provide all the information you need to know about car fuel injectors, including what they are, how they work and the common symptoms to look out for when they go wrong. Use the links below to navigate the guide. What Are Fuel Injectors? How Do Fuel Injectors Work? Signs and Symptoms of a Faulty Fuel Injector Maintaining Fuel Injectors