Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 14Get this manual
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Section 5FFuel Injection System Troubleshooting Scan Tool Normal Specifications (IdleWarm EngineClosed ThrottleNeutral) 5F-2 Important Preliminary Checks 5F-3 Before Starting 5F-3 VisualPhysical Check