Blown262
New member
So I found a killer deal for a set of rods and pistons on ebay and couldn't pass them up. They came in today and look mint, less a couple of nicks on the skirts of the pistons. The rods are absolutely mint. Now I noticed the pistons have what appears to be injector spray pattern carbon buildup on them. Is this normal? Is it bad? And what causes the pattern to build up on the piston like that? A lot of fuel, injection pressure, both?