I brewed a california common which was in secondary for 3-4 months. I used my kegerator for the first time in a few years instead of bottling. Things were fine for a week or so but then I ran out of pressure. I testing the corny for leaks but couldn't find any when I first set it up. It might have simply ran out of CO2, and I could just get more CO2. But if there's something wrong with the regulator or keg, I don't want to waste the money on more CO2 and then also have to buy whatever to get that fixed.
To make a long story short (too late), I'll gladly bottle what's left. There's no pressure left in the keg so I'll have to bottle the standard gravity way, however what do I have to do about carbonation. Should I just add sugar? Will there be enough yeast left at this point? Or should I add some more yeast as well? If so, do I need to add a whole pack or will that be too much?