Fuel Injected

Multi-Port Fuel Injection (MFI) provides a means of fuel metering which insures a precise air/fuel mixture and superior fuel distribution, resulting in reduced exhaust emissions and improved driveability under all driving conditions.

The MFI engines inject metered fuel into all cylinder inlet ports at the same time once every engine revolution. Using this method two injections of fuel are required to produce the charge for each combustion cycle.

An Electronic Control Module (ECM) is used to determine the amount of fuel delivered to the engine. The ECM receives signals from a variety of sensors and devices to know what mode of operation the engine is being subjected to, then analyzes the information and controls fuel delivery, ignition timing and a group of related components to ensure proper engine operation.

The ECM is capable of diagnosing faults with the various inputs and systems it controls. When the ECM detects a malfunction, a ``Check Engine'' lamp in the instrument panel is illuminated, warning the driver to have the system checked.

Fuel is supplied to the injector fuel rail by a tank mounted high pressure fuel pump. A pressure regulator is integral with the fuel rail to keep fuel available to the injectors at a constant pressure.