Fuel Metering System

Fuel Meter Body Assembly:

PURPOSE
The fuel meter body assembly is mounted to the lower portion of the intake manifold. The assembly performs the following functions:

- Distributes fuel evenly to the injectors.
- Integrates the fuel pressure regulator into the fuel metering system.

The function of the fuel metering system is to deliver the correct amount of fuel to the engine under all operating conditions.

Fuel is delivered to the engine by individual fuel injectors and poppet nozzles mounted in the intake manifold near each cylinder.

FUEL METERING SYSTEM COMPONENTS
The fuel metering system consists of the following parts:

- The fuel supply components (fuel tank, pump, lines.)
- The fuel pump electrical circuit.
- The fuel meter body assembly which includes the following components:

- The SFI fuel injectors and poppet nozzles.
- The fuel pressure regulator.

- The upper manifold assembly which includes the following items:

- The throttle body.
- The Idle Air Control (IAC) valve.
- The Throttle Position (TP) sensor.
- The Manifold Absolute Pressure (MAP) sensor.