I was using the Ambrane MiniVac 02 for a few months, it was working really well initially but after an intense car-cleaning session, the suction started feeling weak. I thought the motor was failing, so I called customer support. He said that it was a filter clogging problem, which is common after fine dust. I was asked to remove the filter, clean it properly, and let it dry before using again. After that, the low suction issue improved....