Everything You Need to Know About Fuel Injectors

The key to taking care of your fuel injectors is knowing exactly what they are and how they work. This article has all the information you need about the fuel injectors in your Ford.

What are Fuel Injectors?

Fuel injectors are small cylinders designed to spray fuel into the engine. Fuel injectors are normally located in the engine head or intake manifold. There is typically one fuel injector for each combustion chamber. All the fuel injectors are connected to a fuel rail that supplies fuel to each injector.

Ford fuel injector

Fuel injectors are complex devices, and many have 15 components or more. There are also many different types of fuel injectors. But, most fuel injectors have the following components:

  • Solenoid
  • Valve return spring
  • Fuel filter
  • Spray tip

What Purpose do Fuel Injectors Serve?

Fuel injectors very precisely inject the right amount of fuel into the engine. They are much more accurate than carburetors. As a result, your fuel injected vehicle will get better gas mileage and run better than it would with a carburetor.

Fuel injectors play a big role in ensuring that the air/fuel mixture is always correct. If the engine gets too much air or too much fuel, it doesn't run efficiently. Without fuel injectors to control the amount of fuel the engine gets, the engine's air/fuel mixture is thrown out of whack.

In addition to metering the fuel, injectors also are designed to spray they fuel in a pattern that helps it burn optimally. This reduces emissions, and increases fuel economy.

How do Fuel Injectors Work?

All the fuel injectors in your Ford are connected to the ECU. With some internal sensors, the ECU monitors the engine's activity. Next, it uses the information to determine how much fuel the engine will need and then kicks the following process into motion:

  1. The ECU activates the fuel pump, which then moves the gas from the fuel tank to the engine.
  2. The fuel pressure regulator makes sure the gas is moved at the right pressure.
  3. The gas goes through the fuel rail and is divided evenly among all the fuel injectors.
  4. The fuel injectors spray the gas into the cylinders.