Mitsubishi 3000GT Engine Runs Rough

Hello And Thank You Very Much For Any Help You Can Provide. My 3000gt Starts And Runs, However Then It Begins To Run Rough And May Stall....

I Have A '92 3000gt Vr4 With About 66k Miles. The Car Starts With No Problems But When It Is Cold Will Run Rich (smell Of Gas) And The Idle...