Fuel Charging and Controls

The fuel charging and control system consists of the:
^ throttle body
^ fuel injectors
^ fuel charging wiring
^ fuel injection supply manifold
^ fuel pulse 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 plate.

The fuel injectors:
^ are electrically operated by the Powertrain Control Module (PCM).
^ atomize the fuel as the fuel is delivered.
^ are deposit-resistant and self-cleaning.
^ each have an internal solenoid which opens a needle valve to inject fuel into the lower intake manifold.

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

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