Classic Sedans, Accessories

My 86 560sel sputters as i first step on the gas. At about 1500 rpm the engine picks up and runs like the beast its supposed to be. When i come to a complete stop and the car is still in gear the engine misses constantly. If i just put it in neutral it revs a little and runs smooth again. I just bought this car for next to nothing and put heat in the gas tank, along with a good amount of the recommended "premium" fuel, and it seems to have helped a little bit so far.

Hi All, I have a 84 300D , it was out in the subzero for a week, it is in the garage now, unheated, Chicago area. I tried many times to jump it when it was out side, now it is in 40 degree's but still wont start. Could the fuel injection have sucked air in if the fuel was frozen? if so how do i go about bleeding this system thanks adam