What Is A Fuel Injector And Why Is It Important?
Every modern vehicle is equipped with fuel injectors. Your vehicle’s fuel injector ensures the engine receives the right fuel mixture to function properly. Modern injectors are controlled by the electronic control module (ECM).
A faulty injector will cause your car to run erratically and eventually stop altogether. It can also cause damage if not replaced in time. In this blog, we examine a fuel injector and its importance in your car in more detail.
What Does A Fuel Injector Look Like?
A modern fuel injector is a cylindrical tube about 4 inches in length. It has an electrical connector about halfway up the body. There are rubber o-rings at each end, and the body is made from plastic and stainless steel. The internals of a fuel injector has a valve or plunger that controls the fuel flow based on the electrical signals sent to it.
Where Do You Find A Fuel Injector?
Image Credit: WorldMechanics
Gasoline injectors are mounted in one of two places:
- In the intake manifold – for multi-port and throttle injection engines
- In the combustion chamber – for newer direct-injection engines
There is usually one fuel injector for each cylinder. They are connected to a fuel rail that runs alongside the cylinder head.
Diesel fuel injectors are usually mounted in the head of the engine block. The tip extends into the combustion chamber.
What Does A Fuel Injector Do?
A fuel injector atomizes and injects fuel into the combustion chamber. The electronic control module (ECM) controls the exact timing and volume of the fuel injected into the cylinders. Some older mechanical fuel injectors rely on the inputs from the fuel pump, timing, and cam settings to deliver the required amount of fuel.
Before fuel injectors, carburetors used to do this job. They relied on the intake vacuum from the piston moving downwards to mix fuel with the air as it entered the cylinder. Carburetors were far less efficient without the precise fuel metering allowed by modern fuel injectors.
The fuel injector injects fuel into the engine’s combustion chamber. If it malfunctions, the fuel/air ratio will be incorrect. This can cause several issues, from poor performance to rough running and excessive fuel consumption. Without fuel injectors, your engine will not start at all. They:
- Help optimize fuel efficiency
- Keeps the engine running smoothly
- Allows the engine to perform efficiently at varying engine speeds
OEM Mazda Fuel Injectors From REALMazdaParts.com
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