It’s the front brake pads. Mine do it as well. I just haven’t put a spring on yet but that should solve it.I've recently noticed a "klinking" noise when in reverse. It's coming from the front, and seems likely to be one of the driveshafts. The noise is not heard when moving forward. Any suggestions..?
Try laying your foot on the brake when backing up and see if it still makes the clicking noise,mine did it in reverse also,it was my brake pads clicking.