hyundai Workshop Repair Guides

Hyundai Workshop Service and Repair Manuals

Main Relay (Computer/Fuel System)|Description and Operation|Page 3378 > < Engine - Groan or Squeak Noise On Cold Start-Up
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Main Relay (Computer/Fuel System): Description and Operation

Circuit Description

The Multiport Fuel Injection (MFI) control system is an electronic fuel metering system with fuel injectors near inlet port of each cylinder The amount of
fuel injection is determined by ECM according to engine speed and intake air-flow quantity measured. The emission control system includes oxygen
sensor and catalystic converters. The MFI's three major functions are air-fuel mixture, idle speed and ignition timing control.

Main Relay (Computer/Fuel System)|Description and Operation|Page 3378 > < Engine - Groan or Squeak Noise On Cold Start-Up