Hi, new here. I have a 05 1500 4x4 with the 4.7. My problem is I have a remote starter on the truck and while I was driving yesterday it started sputtering and lost power. I pulled off the road and found smoke coming from the injector area. It is the injector that had the remote starter attached to it. I could smell burning wire smell. I looked further and noticed the wire had broken and was shorted out to metal. I took the wire off and it will run now but real rough when I accelerate. I assume the injector is fried and the engine is running on 7 cylinders. Are the injectors hard to replace? Any help would be appreciated. Thanks