Question for the OMC God!!

[Skools Out]

i know exactly what you've got had the same problem and pulled out lots of hair till i found out i had a bad electronics pack. Motor would run great some days run crappy and loaf the next. hard to start some days and crank on a turn the next. Now as to which one is bad can't help ya there i say buy one pack then try on one bank see if problems goes away if not put the old set on the other side and try again.