Aquila 650 efi, 2012. fuel supply problem. Error F1 came on. The engine does not want to start. There is electricity, the fuel pump is working, but the fuel is not coming to the injectors. What could be the problem? Where to look for a fault? Where to start from? I believe it is not a major malfunction. I don’t have a service network for Hyosung. Let me mention that the motorcycle has been standing for two years.