Range Rover (LM) V8-4.4L (2009)
Fuel Injector: Description and Operation
Fuel Injectors
FUEL INJECTORS
The engine has 8 fuel injectors (one per cylinder), each injector is directly driven by the ECM (engine control module). The injectors are fed by a
common fuel rail as part of a returnless fuel system. The fuel rail pressure is regulated to 4.5 bar by a fuel pressure regulator which is integral to the fuel
pump module, within the fuel tank. The injectors can be checked by resistance checks. There is a fuel pressure test Schrader valve attached to the fuel
rail on the front LH side for fuel pressure testing purposes. The ECM (engine control module) monitors the output power stages of the injector drivers
for electrical faults.
The injectors have a resistance of 13.8 Ohms ± 0.7 Ohms @ 20 Degrees Celsius