During my instrument training with my instructor I took off and we are in visible moisture (IMC) at 500 ft AGL. During the climb out with full power the engine began running rough (my butt started sucking on the seat) I added carb heat and it took almost two minutes to clear. The temp was about 40 degrees. That was interesting. The conditions were just right at the wrong time....
I frequently checked the carb heat during that flight and no other icing was detected.
Will
