How do Ford Diesel Fuel Injectors Function?
The Ford Powerstroke 6.0L fuel injector is a hydraulic electronic unit injection system, or HEUI Fuel Injector. These parts were originally made by Siemens, and run on high pressure oil from the oil pump as well as an electic solenoid for control. Let’s take a look at each of the pieces. First let’s look at the Hydraulics, or the force that pushes around the fuel. The oil pump located at the back of the engine produces upwards of 3000 PSI during normal operations. With oil pressure reaching as high as 3,770 PSI, there is plenty of force to move the fuel through the injector, and into the bore of the engine. The fuel injector itself multiplies oil pressure, at a 7:1 ratio, forcing fuel at pressure routinely up to 26,000 psi. The fuel injectors are primed with high pressure oil from a heavy duty rail located above the injectors, moving fuel through the cast passages in the cylinder heads. A HEUI is not yet complete though, we need something to control the flow of the fuel, so we need to
