Blvd43

HEY HELP 86 N/A.... Please...... Heres whats going on. I flushed my radiator today. Then I went to start the 7 and she cranked up but the moment I touch the throttle there is hesitation in the response....then the motor sounds like its about to die, so I gas it and the motor Revs but then the car dies on me...like BAM my bitch is dead. Now heres the crazy part I can rev up to 5k only on start up. Now after start up I can keep the car running if I rev up and keep it at 2k only. I checked every hose possible on my baby, nothing.....there is some smoke thats coming from or underneath the throttle body too. I JUST NEED HELP PLEASE>>>>>>>>>>THANKS

BLVD43