Fuel Metering System

The fuel metering system is made up of the following parts:

• Fuel supply components (fuel tank, pump, filter, regulator and lines)
• Fuel pump electrical circuit
• Fuel rail assembly, including:
  • Fuel injectors
  • Pressure regulator
• Throttle body assembly
  • Idle air control (IAC) valve
  • Throttle position (TP) sensor

Fig 1: Schematic View Of Fuel System

Courtesy of GENERAL MOTORS CORP.