Hello together! After I have bought my Scorpio new spark plugs, and have made clean it runs only on 5 cylinders. The 2nd cylinder on the passenger side does not get fuel, before cleaning it ran flawlessly. I have the battery jammed and cleaned everything decently and sprayed with contact spray but not touched anything at the injection or what else has to do with the fuel supply. I then have the battery clamped again and since then the 2nd cylinder without spr It. Should I disconnect the battery again, or the control unit depend? Does injection cleaner what? What could be the problem? Scorpio 2,9i V6 Built`93