Hi again everyone !

I finally bought the car, and i rum smoothly but got a little cold start problem:
3 pumps on gas, turn key:
If i put it in drive it will just stall. I have to let i stay idle, with the footh on the gas for a minute or two, before put it in drive.
When hot start there is no problem at all. I think it's a choker problem?
I have changed the distributor cap and rotor, cable, plugs and air filter