I have intermittent starting problems on my 96 E320. I've replaced about everything that I can think of, from the coils, plugs, computer, fuel filter, sensors, etc..
Does anyone think this could be fuel injectors? I turn the key, and sometimes it starts fine, other times (same day), it takes a while, I hear a "chunk", then it starts.
How about the starter? Can the starter be causing this? I have always known the symptoms of a starter was that the engine wouldn't turn over at all.