The 2002 Lincoln LS V6 engine has a
front-to-rear firing order. This means the cylinders are arranged in a "V" configuration, and the firing order dictates which cylinder ignites in what sequence. The exact physical location of each cylinder relative to the front of the car isn't easily described in words (left bank, right bank, etc. gets ambiguous), but you'll need a diagram or workshop manual for that.
To find the cylinder locations, I strongly recommend looking up a repair manual specific to your 2002 Lincoln LS V6. These manuals usually have detailed diagrams showing the cylinder arrangement, firing order, and other engine components. You can find these online (often as PDFs) or at auto parts stores.
