1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 245Get this manual

1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 245

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Condition Poor Acceleration Idles Ok, Top Speed Ok(Continued) Engine Surges Between 4000 And 5000 RPM
Improper EFI Setup
Failed Switch Box Failed or Disconnected EFI Sensors Fuel Delivery