Fuel Injectors

WARNING: This page is about a different variant/trim than selected.

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

CAUTION: Each injection event is controlled by a charge and discharge cycle allowing energy to dissipate in, and recover from, the injector. Never disconnect the wiring connector when the vehicle is running. The injector may remain open thus causing engine damage.

Six fuel injectors are located through six holes in the camshaft carrier. Each injector is sealed by a seat in the cylinder head and held in position by a clamp. The clamp is secured with two bolts into the cylinder head.

Each injector is supplied with pressurized fuel from the fuel rail and delivers finely atomized fuel directly into the combustion chambers. Each injector is individually controlled by the Powertrain Control Module (PCM) which operates each injector in the firing order and controls the injector opening period. Each injector receives a 12V supply from the PCM and, using programmed injection/timing maps and sensor signals, determines the precise pilot and main injector timing for each cylinder. If battery voltage falls to between 6 and 9V, fuel injector operation is restricted, affecting emissions, engine speed range and idle speed.

For additional information, refer to: FUEL CHARGING AND CONTROLS

The PCM can monitor the injector operation by monitoring both connections to the injector. Each injector can be diagnosed by the PCM and Diagnostic Trouble Codes (DTC) stored.

In the event of a failure of a fuel injector, the following symptoms may be observed:

Engine misfire
Idle irregular
Reduced engine performance
Reduced fuel economy
Difficult starting
Increased smoke emissions.