Here's a link to a couple of pages that show pictures and explanations of damage that can be caused to our injector pumps as a result of low lubricity and various contaminants. Some nice pics of the cam plate and roller pins. FYI, the file is 3MB.
http://www.fueladditiveonline.com/bosch.pdf
Sean
http://www.fueladditiveonline.com/bosch.pdf
Sean