The answer to 'sewer repair making noise' is that there are several common causes for a noisy sewer repair, including improper installation, damaged or worn-out components, and clogs in the sewer line. Symptoms may include gurgling sounds, whistling noises, or water backing up into the home. Solutions can range from simple repairs to replacing the entire sewer line, depending on the underlying issue.
If the noise is relatively minor and the sewer system is still functioning, it may be possible to address the problem with some basic DIY troubleshooting and repairs. However, for more serious issues or if you're not comfortable working on the sewer system, it's best to call in a professional plumber to diagnose and fix the problem properly.