The following has been completed

1 changed glow plugs -needed
2 new starter - needed
3 set valve adjustment- needed
4 using clean fuel from can /purge setup
5 all pulleys are checked/ no siezed bearings
6 hot battery
7 priming fuel

ok ,heres the things I noticed while turning it over ,it still is turning slower than my other car,could this be a bad carbon buildup ?When putting the glow plugs in I noticed a carbon type residue on the end of the glowplug ,and when I rescrewed the new ones in it had the same crap on them when I checked them one last time. Is the prechamber badly carboned up?Can I take the exhaust and intake manifold off and see this ? Does this require me to do the upper end? This car will not start with the help of ether ,only used small amounts of it and could not even get it to cough.The way the valves were way off this car had not been under the best maintinence schedule.