Hi again, been a while since I've been here. Probably because my w123 has been bullet proof. However, over the past month or so I've seemed to develop a certain rattle or knock type noise. The noise isn't normal present under idle conditions and becomes more apparent under part throttle conditions. It is not a constant noise and seems to get better after the engine has warmed up for 10 minutes or so. To me it sounds like it might be an injector problem, but I want to be sure before spending the money to redo the fuel delivery system. For what its worth last time i changed my glow plugs I found out that I had a severely damaged pre-chamber. Here is a link to thread with picturs of the prechamber. The glow plug tip broke off which led me to pulling it out. Now I did not bother to check the rest of the cylinders but I would think its likely that a fuel problem led to this as well I may have not fixed the root cause of this failure. I will try to post a video of it, but it is rather hard to hear on video. For some reason or another the embeded youtube function isn't working for me So I'm also posting a link
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