Few days ago I noticed a couple tiny pieces of black debris in my right tank when pre-flight/sumping tanks. I thought nothing of it thinking it was probably already in the cup (stored in the seat back). I did another sump and all looked clear. Flying... no issues.
Yesterday same issue came up before flight. It definitely came from the tank. It looks like tiny black paint flakes or something? It has my attention. I havent checked the belly sump screen yet. Couple questions: What steps need to be done, not only to drain and clean/rinse the tank, but the fuel line as well? I presume there's a screen in the tank. Is there one at the carb too? How about possible debris to clog the fuel valve?