NOTE: Early fuel filter assemblies may have item 2 in the location of item 9. Item 2 is used by the assembly plants as a…

The pulse-width controlled current to close the coil is shut off, but the spool valve remains closed. The intensifier piston and plunger return to their…

When the Injector Drive Module (IDM) determines that the correct injector on-time has been reached (the correct amount of fuel has been delivered), the IDM…

The pulse-width controlled current to the OPEN coil is shut off, but the spool valve remains open. High pressure oil from high pressure oil rail…

A pulse-width controlled current energizes the OPEN coil. Magnetic force moves the spool valve open. High-pressure oil flows past the spool valve and onto the…

During the fill stage both coils are de-energized and the spool valve is closed. High-pressure oil from the high-pressure oil rail is deadheaded at the…

The injection operation has three stages: • Fill stage • Main injection • End of main injection  

The injector needle opens inward, off its seat when fuel pressure overcomes the Valve Opening Pressure (VOP) of 28 mPa (4,075 psi). Fuel is atomized…