The main use of fuel pump is to pump the fuel into the combustion engine. It is not necessary to have a fuel pump in every vehicle. Older engine are designed to feed the fuel into the engine without a pump. But modern design engine requires fuel pump to deliver the fuel into the fuel injection system under high pressure or low pressure. There are two kinds of Fuel Pumps. They are Mechanical Fuel Pumps and Electrical Fuel Pumps.
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