I can't read the tach while using the timing light, but at a certain rpm the timing jumps from base to full advance - there's nothing in-between.
Have a 2005 55hp Merury Seapro. Engine starts normally and idles normally but loses power when sailing for maybe two or three
That it would.Good luck,hope it all works for you
A tiny suction beach may be causing what you describe!
Remove the water neck fitting.
Check for excessive slop at the upper pivot tube
Ayuh,.... Electric fuel pump, or mechanical,..??
Will it restart if ya pour abit of gasoline down the throat of the carb,..??