The phrase "ticking noise" refers to a repetitive sound, like the ticking of a clock or a tapping sound. It is often associated with a ticking motion or a noise similar to that of a ticking clock.
Sentences with «ticking noise»
Until two weeks ago; ticking noise in the morning, car died in the afternoon. (edmunds.com)
My 2003 Opel Agila 1.2 is making a very loud ticking noise when I start it up, and it doesn't sound right. (mechanics.stackexchange.com)
Yes, there's an odd ticking noise coming from some Pixel 2 speakers, but Google promises a software fix for this issue. (techradar.com)