1998 Johnson Evinrude "EC" 150, 175 FFI Service Repair Manual, P/N 520211, Page 70Get this manual
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IEngine SurgesRuns Rough SYSTEMCOMPONENT CAUSES ACTIONS
Faulty Vapor Separator
Erratic ECU Signal to Injector(s)
Damaged, Worn, Fouled or Incorrect Spark Plugs Damaged