i just put a used mottor in my 2003 ram 1500 it was running befor i went in. after it was put in and every thong was hook up and it wont fire. everything is the same all the plugs macth i put all the coils that were from the origanl engine in but still get no spark i checked all the fuses and used a scanner but it said their are no codes on the vechile. i then checked to see if i had power to all the injectiors. coils and sensor i have power to every thing and i still cant figiur it out if any one knows what i can do to fix this or any ideas help will be greatly apricated thanks.