Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Computers and Control Systems: Description and Operation

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 multi-port 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 specifications.

Always refer to the Master Parts Catalog for parts usage and interchangeability before replacing:
- throttle body.
- component part of a throttle body.