hard cold start

1990 Mazda B-2200 with Weber 32/36 DGEV have hard time starting when cold outside but when weather isnt cold it starts right up so any idea would be helpful.

Check the choke......it very well may need to be adjusted for your environment. The 3 screws holding the choke heater in place can be loosened and the choke heater rotated to place more or less spring tension on the choke flap in the throat of the carb. There is another adjustment for the idle speed when the choke is engaged......this is a different screw than the regular idle speed screw.