The automotive fuel pump in your vehicle, does exactly what it sounds like; it pumps fuel, from the fuel tank, to the vehicle’s engine.
Fuel in your tank, is drawn up through a line, that heads toward the engine.
So, the automotive fuel pump you have is either, mechanical or electric.
Consequently, if your automotive fuel pump is electric, it’s operated by; a small motor, that draws the fuel sitting in your gas tank up through a line.
The mechanical pump’s operation is reliant on; the up and down movement of a lever, very much like that of a well pump handle. As a result, the pump lever’s movement, acts on a rubber diaphragm; used to create the vacuum pressure, necessary to move the fuel through a line.
Electric, Fuel Pump
So, as engines moved away from carburetors and towards fuel injection; mechanical fuel pumps, have been replaced with the electric fuel pump. Mostly, because fuel injection systems, operate more efficiently at higher fuel pressures, than mechanical pumps can generate. Electric fuel pumps, are generally located, within the fuel tank. Above all, the electric pump the actually, cooled by the fuel in the tank.
Mechanical, Fuel Pump
However, mechanical pumps operate at a low 3.5 to 9 PSI of pressure; with the main emphasis on volume (GPH) rather than pressure. The pump chosen for a particular engine; must provide sufficient volume; to accommodate the expected fuel flow, for the size of the engine in cubic inches.
Common, Automotive Fuel Pump, Failure Signs:
- Whining Noise From the Fuel Tank.
- The Engine Sputters or Surges.
- Trouble Starting the Car.
- Loss of Power Under Load.
- Reduced Gas Mileage.
- Stalling at High Temperatures.
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