I haven't driven the Supra in a few days so after I took out the trash today I decided to check the oil in her and start her up for a few minutes. Well after letting the engine come up to operating temp. I rev'd the motor (no more the 4K) a few times and let it idle some more. When I was done I notice the there was liquid on the ground behind the car and it looked like it had been sprayed out of the exhuast. I rubbed my finger in it. It was black (soot) and smelled slightly like gas and coolant. I also rubbed my finger around the exhuast tipped and there was tons of soot there too. Does this mean I am running really rich and raw fuel is blowing out?