The primary job of the fuel pump is to deliver fuel from the gas tank to your car's engine. Most modern cars use a fuel pump located in the gas tank, while some older models have the fuel pump outside the tank. There are two different kinds of fuel pumps: mechanical and electric.
Mechanical fuel pump - as the name implies, this type of fuel pump uses mechanical motion to produce the necessary hydraulic thrust to get fuel from the gas tank to the engine. The primary catalyst for the mechanical fuel pump is a camshaft, which turns to create a lifting motion from an actuating lever. A suction force created by an inner diaphragm sends the fuel through the mechanical fuel pump's one way valve. Another one way valve forces the fuel toward the carburetor. Even though the mechanical fuel pump may produce a significant fuel flow, the carburetor takes only the amount of fuel necessary for normal engine operation.
Electrical fuel pump - very similar to the mechanical fuel pump is scope, the electrical fuel pump differs in one significant way: it has a solenoid switch as the main catalyst, as opposed to the camshaft. From there, the general action is very similar. The electrical fuel pump uses the same type of diaphragm, one way valves and control mechanisms to deliver fuel from the gas tank to the carburetor.
(Warranty 3 months)