I have a 1999 4.6 f-150 I changed out my timing chains made sure it was right , replaced injector on number one cylinder, yesterday I started it and it ran for a sec or two then it died , I checked the coils they're all firing, replced plugs and wires , still wont run , I also noticed on the injector I replaced the conection wires were pulled out the sleeves and were touching , I fixed it , and checked all my fuze's all checked out good , but it acts like its not getting fire , what am I doing Wrong