Found a big air bubble in the leur-lock section of tubing (which happens frequently). Tried re-tightening the leur lock to make sure it wasn’t loose to let air in, then re-primed it. As I was re-tightening the leur lock section, I heard a ‘crack’ sound, as if I tightened it too tight and it cracked? I don’t see insulin leaking, but has anyone had this cracking sound ? Was it ok? (Am still learning about this pump).
The air bubble is usually there and wont hurt you. The other, I have no idea!