1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 360Get this manual

1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 360

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DIAGNOSTICS
When the ignition is turned ON, the Engine Control Module (ECM) will turn the fuel pump ON for secondsDuring engine cranking, the ECM will turn ON the fuel pumpIt will remain ON as l

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