Assuming you are chocking it and the choke actually works. Assuming float is set properly. Assuming not parked on a steep hill.
You need to test as follows:
Start it after one day, then after two more days, then after three more days. To be sure what's going on before making more trouble. You need to know exactly how many days. Carbs do evaporate. You say 4, then you say a few days. So quantify it more carefully and time each test to be sure how many seconds.
It's basically and open air system. After testing, the answer may be "that's normal, start it more often or get an electric primer helper".
