Fuel Charging and Controls

The fuel charging and controls system consists of the:
^ throttle body.
^ fuel injectors.
^ fuel charging wiring.
^ fuel injection supply manifold.
^ fuel damper.
^ fuel pressure relief valve.

The fuel charging and controls system is:
^ a sequential, multiport fuel injection (SFI) system.
^ pulse-width modulated.
^ mass air flow controlled.

The fuel injection supply manifold:
^ delivers fuel to the individual fuel injectors.
^ receives fuel from the fuel supply line.

The throttle body:
^ controls air supply to the upper intake manifold by positioning the throttle plate.
^ connects the accelerator cable and, if equipped, the speed control actuator cable to the throttle lever.

The fuel injectors:
^ are electrically operated by the powertrain control module (PCM).
^ atomize the fuel as the fuel is delivered.
^ are deposit-resistant.
^ each have an internal solenoid which opens to inject fuel into the lower intake manifold.

The fuel pressure relief valve is used to inspect and relieve fuel pressure.

The fuel pulse damper:
^ reduces fluctuation of fuel pressure during injector operation.