2001 Mitsubishi Diamante running rough and using huge amounts of fuel

Drive my car yesterday and suddenly it start running very rough, smoking (bluish) and using huge amount of fuel. It also smells strongly of bad or partially unburned fuel. It made it home and still runs, but it's rough. Pulled the plug on the map sensor and it ran a little better. Was told the map was the problem. Not quite sure. Anyone know more about this? Thanks