Fuel Delivery and Air Induction: Description and Operation

System Layout (2WD):

DESCRIPTION
This vehicle is equipped with a 1.8L, 4 cylinder, SOHC gasoline engine and a computer controlled electronic fuel injection system. The system maintains an air/fuel mixture as close as possible to the ideal stoichiometric ratio, for all operating conditions. Fuel is supplied to the injectors at high pressure by an in-tank electric fuel pump. The computer monitors various engine mounted sensors, including an exhaust gas oxygen sensor, and uses this information to determine quantity of fuel needed. The computer energizes the injector for varying lengths of time, depending on amount of fuel required.

FUEL AND INTAKE SYSTEM COMPONENTS
The primary fuel and intake components are covered in this section. For information regarding electronically controlled devices, the computer, and its functions, refer to COMPUTERS AND CONTROL SYSTEMS.

^ Accelerator pedal and cable
^ Air cleaner, intake air ducts and associated parts
^ Air valve
^ Fuel tank
^ Fuel pump
^ Fuel pump relay
^ Fuel filter
^ Fuel pressure regulator
^ Fuel rail
^ Fuel hoses
^ Fuel injectors
^ Idle speed control (ISC) valve
^ Resonance chamber
^ Resonance duct
^ Throttle body