do the cylinders of the ea82 have a surface covering on them ..perhaps even sprayed on ?..the engine is out and with a light I can see small cracks everywhere ..almost like looking at weathered paint of a door that has been sitting in the sun for years...also small pieces of rectangular or square shaped material has flaked off and you can definitely feel the indents with your finger nail..

It's carbon. All engines do that.

 

GD

...and it could be "Cleaned" Not all of course, 'cos engines somehow "Need" it, but the Excess...