I just replaced a faucet and drain on a sink which involved taking out and reinstalling the p-trap. When removing the p-trap I noticed the union nut was very tight. After my re-installation - hand tight - it leaked. Adding a bit of pipe dope and tightening a bit more with a wrench I heard some subtle creaking/(cracking?) and it's still leaking slowly. I'm assuming something may have cracked and I'm ok with replacing it if necessary, but some questions:
- How do I know if something cracked and needs replacing?
- Should I replace just the p-trap side of the drain with the union nut or cut away and replace the connector on the wall side as well?
- If replacing the connector on the wall side, what parts should I use and how should I do the install? I dislike the way that things are cemented since it means cutting a little more pipe each time I need to do a replacement.