Fuel Pump

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A fuel pump is an essential part of many modern engines seen in vehicles today. The fuel pump is used to get fuel from inside the gas tank, to the engine, using lines or tubes. In vehicles that use a carburetor, the fuel is delivered under low pressure. In a fuel injected system, the fuel is delivered under high pressure. Fuel pumps in vehicles are either mechanical or electric, and are located inside the gas tank, or just outside the tank.

Related Items

Fuel Pump - Mechanical

Mechanical fuel pumps are used in older engines which are equipped with a carburetor. This type of fuel pump uses the power of the engine via a lever which is connected to the crankshaft. This type of pump is used on systems which don’t have a battery or some other form of electrical energy. The main purpose of a mechanical fuel pump is to siphon fuel from the gas tank and push it into the fuel bowl in the carburetor. This type of pump is normally bolted to the engine block or head. Read More -->

Fuel Pump - Mechanical
Fuel Pump - Mechanical

Fuel Pump - Electric

Electrical fuel pumps were first seen and used on fuel injected vehicles which operate on a more complex system. Fuel injected vehicles needed the electric pump because it produced more pressure which is needed to get the fuel through the injectors. The pressure on an electric pump is usually around 25 to 80 psi. The increase in pressure can cause the pump to overheat and malfunction, which is why the pump is normally placed in the fuel tank were it is cooled by the fuel and lubricated. Driving with less than ¼ a tank can cause overheating of the fuel pump if it is located in the tank. Electric fuel pumps are normally inexpensive but can be difficult and expensive to install since they are in the fuel tank. Read More -->

Fuel Pump - Electric
Fuel Pump - Electric


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