Merc issue

[capt charlie's charters]

2002 175 Merc, so here's the deal, last May as I motored into Harley Ensign lost power...motor died and wouldn't stay started after numerous attempts.  After being at home for a few days pulled it out put on the muffs to try and figure something out, after several false starts, fired up and rain great.  Ran great all summer, weekend up to Charlevoix then local tournaments ( including erie ), fun outings on st clair you get the picture then today after running out to the hotponds from Bolles, several moves in the pond....back into erie to head home and she shuts down again.   acts like not getting any gas, would start up barely idling at times and then suddenly reving up by itself then dying again.   If I could keep it running, there was no acceleration, sounding like weak.   When I was able to throttle up while in idle, ton of blue white smoke.   anyone have the same experience ?

[Waterfoul]

Haven't had anything like that happen to any of mine but it sounds like the ECU has an issue.