Where is the car fuel pump installed?
2 Answers
Car fuel pumps are installed inside the fuel tank. The function of the fuel pump is to draw gasoline from the fuel tank and deliver it through pipelines and fuel filters to the float chamber of the carburetor. It is precisely because of the fuel pump that the fuel tank can be installed at the rear of the car, far from the engine and below the engine level. Fuel pumps can be divided into two types based on their driving methods: mechanically driven diaphragm type and electrically driven type. The car fuel pump is one of the fundamental components of the fuel injection system in electronic fuel injection vehicles. It operates during engine startup and while the engine is running. If the engine stops but the ignition switch remains in the ON position, the HFMSFI control module will cut off the power supply to the fuel pump to prevent accidental ignition.
Speaking of the location of the fuel pump, I have quite a bit of experience. Most modern cars have the fuel pump built inside the fuel tank, which is that large container under the car that holds gasoline. Why this design? Primarily for noise reduction and protection—the tank shields the humming sound, and the fuel flows more smoothly. I remember when the pump in my old car failed, the symptoms were weak acceleration and difficulty starting. Upon inspection, it turned out the pump was stuck inside the tank. Replacing it was quite troublesome, requiring the entire tank to be removed, costing both time and money, but the hidden location reduces collision damage. Different types of cars vary; some older models from the 90s might have the fuel pump externally mounted near the engine, making it easier to replace but more prone to failure. I recommend car owners regularly check the fuel supply system to avoid breaking down on the road.
