I had another look inside one of my cylinders with the new Ablescope today. One the piston, i see these two little raised thingies (I don't know how else to describe it)... see the picture below. What am i seeing here?
Here's another look at another part of the same piston... is it normal for piston faces to have so much crud on them?
Here's another look at another part of the same piston... is it normal for piston faces to have so much crud on them?