Hi all I’m new to the forum and need help. I’ve owned discovery 1 and two for twenty years. I currently have two 03 discovery 2. First. Wife was driving to work and lost power Called me and said truck was running bad and would not go over thirty mph. I lumped truck home and thought it acted like the cats were plugged. Except this truck already had cats removed when I bought it. Long story short. I have replaced cam sensor, plugs, wires, coil paks, maf, air and oil filter, truck still acts like it jumped time. No change. I pulled plugs and cylinders two and six were white and looked new. The rest were black soot covered. All Otis has been done and the truck still runs exactly the same. Starts right up with a little cough does not overheat Will not pull out it is so weak. I can put it in low range and move it in and out of garage. What next.