300ZX Coupe V6-2960cc DOHC (VG30DE) (1994)
Fuel Injector: Service and Repair
Fuel Pump Relay Location
REMOVAL
1. Disconnect the fuel pump relay.
2. Turn the ignition key to the start position for approximately 15 seconds (this will release the fuel pressure).
3. Drain the coolant from the radiator petcock (located above a panel in the lower splash shield).
4. Remove the following:
^ All vacuum hoses
^ All electrical connectors
^ EGR tube
^ Air intake tubes
^ Accelerator cable
^ Cruise control cable
^ Ignition coils
5. Remove the upper intake collector.
6. Remove the following parts:
^ Vacuum hose for the fuel pressure regulator.
^ Fuel delivery and return hoses.
^ Injector harness connectors.
NOTE: Make a note or sketch of the position of injector terminals in relation to where the wiring harness was situated. This will aid in
reassembly.
Fuel Injector Rail
7. Remove the injectors and fuel rail as an assembly.
CAUTION: Do not place the injector or fuel rail in a vise, this may cause irreparable damage.
8. Remove injector securing bolts and remove injector from the fuel rail.
INSTALLATION
1. Clean all parts (including the sealing area on the manifold) with a suitable cleaner.
2. Install new O-rings (check the electrical connectors for corrosion and cracked insulators or boots).