Computers and Control Systems: Description and Operation

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WARNING: DO NOT SMOKE, CARRY LIGHTED TOBACCO OR OPEN FLAME OF ANY TYPE WHEN WORKING ON OR NEAR ANY FUEL RELATED COMPONENT. HIGHLY FLAMMABLE MIXTURES ARE ALWAYS PRESENT AND MAY BE IGNITED RESULTING IN POSSIBLE PERSONAL INJURY.

The Sequential multiport Fuel Injection (SFI) System Is Classified As:
- multi-point.
- pulse time.
- mass air flow controlled.

To maintain the required exhaust emission levels, the fuel metering system must be kept in good operating condition and adjusted to the specifications listed in/on the following sources:
- the applicable section of this group
- the Engine/Emissions Facts Book
- the Vehicle Emission Control Information (VECI) decal

Additional engine performance checks are required to keep the exhaust emissions below the specified maximum pollutant level.

Always refer to the Master Parts List for parts usage and interchangeability before replacing a throttle body or a component pan of a throttle body.
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