HAPPY FRIEND YEAR FOR YOU ALSO. I am from Venezuela and I do not understand very well the name that you give to the pieces, that problems is typical in the cars that have that engine (lanus, sky, corsa, etc.) is what they call oil or silk collector that is nothing more that it had to go from the oil pump to the bottom of the carter and that is by where the pump absorbs the oil, in the stretch it carries a mesh filter covered with a species of cup is surely covered. It takes its time to clean it but you have to do it very well I recommend you use acid for engines. Do it and tell me.