08 f350, deleted, got towed in last night. Check engine light on with p0284 #8 low contribution. Monitor power balance and all cylinders on bank 2 are missing, injector kill on those cylinders make no change in rpm. Relative compression all 0%, no exhaust smoke, Injector electrical test passes, high pressure fuel test passes, no metal in fuel bowl, will not complete a KOER self test, wiggle test on harness makes no change. Any one run into this or have some thoughts? My 6.4 experience is very limited, could there be a fuel return issue? It seems electrical to me even though the buzz test passes. Thinking I will pull valve cover and test all injector circuits next but would like some other opinions.