2008 Evinrude E-TEC 55MFE Technical Manual, Page 95Get this manual
SYSTEM ANALYSIS DYNAMIC TESTS
DYNAMIC TESTS
Cylinder Drop Tests
Use the Evinrude Diagnostics software Dynamic Tests to momentarily disable one cylinder while the outboard is running The Dynamic Ignition test disables the ignition and fuel injection circuits to cylinder The Dynamic Fuel test momentarily disables one fuel injector circuitBy dropping one cylinder, RPM and running quality changes can be compared for each cylinder
Fuel Control Adjustment
Use this test is to help identify cylinder that may be too rich or too leanThis feature should not be used by itself to identify faulty injectorEvinrude Diagnostics software allows temporary adjustments to the fuel flow characteristics of the injectorsFactory fuel flow settings are restored when power to the EMM is returned to OFFTest the outboard at the RPM where the problem is occurring
IMPORTANT: Test the outboard while the running quality issue is presentUse the test procedures to identify inconsistencies in voltages and cylinder performanceOnce circuit has been identified as malfunctioning, inspect all related wiring and connectionsCheck all voltage inputs and grounds; and perform resistance tests for all circuits before replacing any suspect componentsDynamic Tests can be used with: timing light to determine how other cylinders are affected by one cylinder being "dropped"; or voltmeter to check voltage changes on electrical circuits