Fuel Delivery and Air Induction: Description and Operation

Vacuum Hose Routing:

DESCRIPTION
This vehicle is equipped with a 1.6 liter, 4 cylinder, SOHC (single overhead camshaft) 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 electric fuel pump in the tank. The computer monitors various sensors mounted on the engine, including an exhaust gas oxygen sensor, then uses this information to determine the amount of fuel needed. The computer energizes the injectors (either all at once or in pairs) for varying lengths of time, depending on the amount of fuel required.


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.

FUEL AND INTAKE SYSTEM COMPONENTS
^ 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