Okay, i just recently purchased a syncro with 2.1 wbx digijet. Car has been standing for 13 years in a parking lot, i got it running and drove it home

Then the problems started, now the engine barely stays on, you have to constantly pump the accelerator to keep it alive, and it runs super rich according to plugs, wich were pitch black and smelt like fuel. Plugs are new, rotor and dizzy cap seems good, as well as the wires. I wonder is some sensor dead, like water/air?
One weird thing, when i purchased it the idle was screaming at 2000rpms. Now it wont idle at all... curious.