The answer to 'leak repair making noise' is that a leak repair making noise is often caused by a problem with the plumbing system, such as a faulty valve, a loose connection, or a problem with the water pressure. This can result in a whistling, hissing, or gurgling sound coming from the repaired area. To fix this, you'll need to identify the source of the noise and make additional repairs.
If the noise is coming from a newly repaired leak, it's possible that the repair was not done properly, or that there is an underlying issue in the plumbing system. In this case, it's best to call a professional plumber to inspect the repair and make any necessary adjustments. They can also check for any other problems that may be causing the noise.