Happened to my Friday night mid Channel to Guernsey. Airways, in the cruise for 1:20 and then it felt like it was fuel starved. Richened the mixture and it recovered. Did not miss a beat again for the rest of the leg nor the return.
No idea on the cause. Maybe water or crap being pulled through the injectors. Going richer probably enough of an increase to flush out.
I could have crushed coal to a diamond.....
