Bump again;

I just noticed that I've got the bubbles at the base of the injectors in the 300SDL also. My fuel return lines were crispy so I just changed them out today. Prior to the changeover they were weeping diesel onto the injectors and that's when I saw the bubbles. Pretty much all the injectors have the bubbles with the exception of one, maybe two of them. I still have bubbles, less so though, since the change out, but I'm curious as to what's causing them.

Any ideas????

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-livin' in the terminally flippant zone