How to teardown and repair a faulty electrical fuel pumps

#fuel_pump #gasoline_pump #electrical_pump An electric fuel pump is a tool used to power a vehicle's engine system by providing fuel through the use of electronic means. The electric pump made cars more efficient, reliable and affordable. The electric fuel pump is an alternative to a manual fuel pump system and is widely considered to be a better use of technology with regards to the function and operation of motor vehicles. An electric fuel pump is small and thermally insulated to prevent sparking. Generally, it consists of a 12-volt electric motor attached to a pump assembly that pulls fuel in as the motor spins, and pushes it out through a different line that goes to the engine compartment. The fuel may pass through a fuel filter after it leaves the pump, or it may be filtered before the pump. The assembly runs at a constant pressure to allow for optimum fuel delivery to the engine without interruption and also to prevent air from getting into the fuel lines and causing problems. The electric fuel pump, a modern alternative to the manual pump, is mounted inside the vehicle’s fuel tank. Instead of a manual mechanism activated by the engine's rotation, a small electric pump is powered by the vehicle’s electrical system. This means the pump is independent of the operation of the engine. The electric fuel pump can deliver more fuel at a higher pressure to help the engine get all of the fuel that it needs. Because the electric fuel pump pressurizes the fuel system before the engine is started, there is always a constant supply of fuel available in the lines at the proper pressure. There are also no air bubbles to cause vapor lock. An electric fuel pump is used on engines with fuel injection to pump fuel from the gas tank to the injectors. The pump must deliver the fuel under high pressure (typically 30 to 85 psi depending on the application) so the injectors can spray the fuel into the engine. Fuel pressure must be within specifications for the engine to run correctly. Too little pressure can starve the engine for fuel, causing it to run lean, misfire, hesitate or stall. Too much fuel pressure can cause the engine to run rough, waste fuel and pollute. Electric fuel pumps are usually mounted inside the fuel tank, though some may be mounted outside the tank. Electric fuel pumps come in a variety of designs. Some older applications use a positive displacement "roller cell" pump. This type uses rollers mounted on an offset disc that rotates inside a steel ring. Fuel is drawn into the spaces (cells) between the rollers and pushed along from the pump inlet to the outlet. Roller cell pumps typically spin about 3,000 rpm. This type of pump can generate very high pressure, and the flow rate tends to be constant. But the output comes in pulses, so a muffler is often mounted in the fuel line after the pump to dampen pressure pulses. A roller cell pump may also be mounted outside the fuel tank, and used with a second low pressure supply pump mounted inside the fuel tank. Disclaimer: The ABJ Garage is not affiliated with the businesses whose products are shown in this video. Any trademarks depicted are the property of their respective owners. Dear viewers, if you own the copyright to any video posted on the channel, and you are against placing your videos on the list, and if you do not want to see your video in the compilation please write us in the comment section below or use the following email address: bichakum1987@yahoo.com **************************************************************** DISCLAIMER: Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing."

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