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Automotive low pressure fuel pumps are responsible for delivering fuel from the fuel tank to the engine at a lower pressure, typically around 2-15 psi (pounds per square inch). These pumps use vacuum or mechanical force to draw fuel from the tank and pressurize it before sending it to the engine. They play a crucial role in maintaining the correct fuel-air mixture for efficient combustion, and are commonly used in gasoline engines. Automotive low pressure fuel pumps can be found on both older and newer vehicles, with different designs and technologies used depending on the make and model of the vehicle.