The List of a Car Fuel System Components and its Functions

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The fuel system is responsible for supplying fuel to the internal combustion engine. The fuel mixes together with air and then the spark plugs ignite the mixture to create the combustion power which moves the vehicle. After you fill up your gas tank with fuel, there is a system in place which transfers that fuel to the engine when it is needed. The more demand you put on your engine, the more fuel that it needs to receive.

The car fuel system is comprised of several different components to make this entire process happen smoothly. There is a fuel pump, fuel tank, fuel lines, fuel filter, fuel injectors, and carburetor. It is really no different than the heart, veins, and kidneys of your body working together to keep you moving. If just one of these components were to malfunction, it could interfere with the entire fuel transferring process. Then your engine would either not function at all, or it would function very slowly.

Fuel System Components and its Functions

Below is a list of the components of a car fuel system. When you perform routine maintenance checks on your vehicle, you’ll want to make sure these components are in top notch condition. If you notice wear and tear on any of these components, then you should replace them immediately to prevent problems with your vehicle.

1) Fuel Pump – Inside of the fuel tank, there is a component called a fuel pump. A lot of newer cars have the pump inside the tank. If you have an older vehicle, you might find the fuel pump positioned in the middle of the engine and fuel tank. It may also be connected right on the engine as well. The job of the fuel pump is to pump fuel into the engine. You probably have an electric pump powered by the car battery if the pump is inside the fuel tank. Otherwise, the engine’s motion will power the pump if it is on the outside.

2) Fuel Tank – The fuel tank should be self-explanatory. When you pump fuel into your vehicle, the fuel is going into your fuel tank. This is where your fuel is stored before it is pumped to the internal combustion chamber. You might also find the fuel pump and emissions technology inside of it as well.

3) Fuel Filter – The engine must have clean fuel for it to function properly and keep running smoothly. The fuel filter is usually positioned around the fuel pump, either before or after it. When the fuel gets pumped from the fuel tank, any tiny particles and contaminants in it are blocked by the filter before the fuel enters the engine.

Read also: 5 Symptoms of a bad Fuel Filter and Replacement Cost

4) Fuel Injectors – The fuel injectors of modern vehicles are controlled by electric sensors and computers. Whenever you step on the gas or put more demand on the engine, a small electric valve is signaled to open and allow fuel to enter the internal combustion chamber. When the demand is over with, the valve is signaled to close. This valve is basically the fuel injector of the vehicle.

5) Carburetor – As you know, the internal combustion engine needs a mixture of air and fuel before the ignition takes place. The carburetor is the component which is responsible for mixing the fuel and air together. After the mixture takes place, it is sent to the chamber where the spark plug ignites it.

6) Fuel Lines – There are all kinds of fuel lines in the fuel system. Fuel lines are how the fuel can travel from one component to another. They are how fuel travels from the fuel tank to the carburetor, for example.

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