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Where is the fuel pump on late-model vehicle with a high pressure fuel injected system is typically located?
tank
Most late-model vehicles have a tank-mounted high-pressure electric fuel pump. Most late-model vehicles have a tank-mounted high-pressure electric fuel pump. Older carbureted vehicles mostly use an engine-mounted low-pressure mechanical pump.
Where is the fuel pump located on most electronic fuel injection systems?
fuel tank
Submerging the pump quiets it and allows the fuel to cool and lubricate it, so most original equipment electric fuel pumps are mounted inside the fuel tank.
Does EFI have a fuel pump?
Higher fuel pressures created by “boost reference” fuel systems, common to forced induction EFI engines, force electric pumps to slow down against the increasing load, reducing available fuel pump volume.
Where is fuel pump on late model car?
How to check the fuel pump
- Make sure the vehicle is off and safely parked on a level surface.
- On most vehicles, the fuel pump is located in the fuel tank.
- Next, you will need an assistant to turn the key to the “on” position while you listen near the gas tank opening.
What controls the fuel pump on most late model vehicles?
pressure regulator
Most late-model vehicles have return-less fuel systems. Instead of using engine vacuum to a pressure regulator under the hood, the system uses engine data and varies the speed of the pump to meet fuel requirements. The pump is energized with pulse-width modulated voltage.
What is a EFI fuel pump?
Starts here6:59How EFI Fuel Pumps Work – YouTubeYouTube
Which side of the fuel pump is responsible for volume?
The in-tank pump in GDI systems is more responsible for volume than pressure. Fuel on this side of the system is called the low-pressure side. A fuel pump on the engine pressurizes the fuel for high-pressure injectors.
What is the high pressure side of the fuel system?
This part of the fuel system is called the high-pressure side. The pressure from the high-pressure fuel pump is monitored by the Powertrain Control Module (PCM) through a sensor and can be modulated by changing the volume of fuel entering the pump inlet.
How much fuel pressure does a fuel pump produce?
While specific pressures vary among different vehicle applications, most high-pressure pumps are capable of producing at least 2,000 psi of fuel pressure.
How does a fuel injector pulse width sensor work?
Systems like these use sensors that record the fuel pressure, and when combining that pressure with the manifold pressure, the PCM knows what the effective pressure is and will determine a pulse width for the injector accordingly. Systems like these offer the best of both worlds.