Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 659Get this manual

Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 659

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DIAGNOSTICS

CIRCUIT DESCRIPTION:
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 t