I would start at the common, easy fixes, then go from there. The obvious is dirty gun. Clean it, paying close attention to the chamber. Are you sure the 4 rounds that clicked were live rounds and not fired brass? The Canik is over sprung. If it doesn’t eject, fired brass might just re-chamber themselves. The slide doesn’t have to come back very far to recook the striker, and you’ll get a click, no bang. Could be bad or high primers, even though it’s factory ammo. Do a pencil test, but I doubt you’ll find a problem since it fired after you tap rack and banged. That’s all I can think of right now.