1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 274Get this manual

1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 274

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FUEL INJECTION SYSTEM DESCRIPTIONOPERATION
The EFI injector assembly is solenoid-operated device, controlled by the ECM, that meters pressurized fuel to single engine cylinderThe ECM grounds the