Fuel Injector - Compatible with 2002 - 2008 Mini Cooper S 2003 2004 2005 2006 2007

Bought four of these standard motor product fj954 injectors, shipping was kinda slow since my only chose was ground but after I installed them I tested them on the rail just to be they didn't leak like all my old ones did. All was good until I tried to fire up the Mini Cooper S. It wouldn't start, it sounded like one cylinder wasn't firing, after taking everything apart again I tested each injector and one of them was not working. So I took it back out and letting it sit for a day or so I tested it on the bench. It still did not work so I kept at it manually applying power to it, after 20 minutes it finally started to click and work like it should. I put it back together and everything is working good. So I suggest to test them to make sure they click before installing