Not in a vehicle but NB does work

[N1API]

If the "tick-tick" goes away with the NB then it is some sort of man made interference like a motor idling. Sounds like some sort of "spark" noise. Band noise" or band conditions would not go away with the NB.

You will also notice that engaging the noise blanker makes signals, especially strong ones sound distorted and also seems to make adjacent channel interference worse. So there is a trade off to killing the static, (QRN).

Al

Thought I'd post...
On 40M I heard a lot of noise, most likely QRM, .. shut my overhead dimmer to the shack (no help). It was a tick-tick-tick and about 100+hz. Very annoying. Not on other bands. Pressed the NB button and all went away. I'm new to this and thought that would be more for vehicle type noise (alternator/vehicle computer/etc.) but it worked for me. To the seasoned folks you probably already knew this, but I'm a "youngster" at this.