Originally Posted by Jamrock10

you have to rebuild the engine or do a AFM delete kit. After doing that, then get someone to reprogram the computer to not switch from 8 cylinder to 4 cylinder. I'm sure your truck was doing that. So no matter what you do. Changing oils, plugs wires. Nothing will work until you do that. You have to take your heads out also and get them shaved. Basically a partial rebuild. When you take to springs and rods out. You will see what I'm talking about on whatever cylinder was reporting