First, you need to relieve the high side fuel system pressure, remove the fuel injection fuel rail assembly and remove and discard the
Fuel Injector hold-down clamp. Then, please disconnect the fuel injector wiring harness electrical connectors from the fuel injectors. Finally, you should remove the direct fuel injectors, remove and discard the upper O-ring Seal, the plastic Spacer, the retaining Ring, the isolator Cup, and the Teflon Seal from the fuel injectors.