1992 Johnson/Evinrude EN 2.3 thru 8 outboards Service Manual, Page 102Get this manual
Surface Leakage TestAll Models Do not exceed the coil's maximum specified amperage when testing itThe ignition coil and spark plug lead should be tested for leakage and insulation failures using the ignition testerLeakage is caused by moisture, cracks, or holes in the coil housing or spark plug leads EJ remove the tester's spark plug