Anyone had any experience with these, the past few days the front right tyre was looking a little deflated so I decided to get the inflater out as it has just an inflate option, followed the instructions, turned it to inflate, connected it to the tyre (with the black cable) plugged it in, started engine etc etc, pressure was in the red, only just, turned it on but nothing? does it make a noise when in operation? my drive is sloped so not sure if that was the issue or what but the needle didn't seem to move and there was no noise coming from the pump so I am assuming its faulty? unless I'm missing something??