I finallly got around to replacing the fuel lines, O rings and IP seals associated with the OM606 motor on my 96 E300D 117k. The o rings were shot and the lines were brown. I did the IP delivery seals at the same time with the manifold off. I struggled a little with the IP in that the springs were tough to realign as I hand screwed in the valve bodies. They were torqued to 35nm. I reassembled the car tonite and cranked it a long time to refill the lines and it started up. The previous posts were awesome.
The problem is that it is now knocking a lot and sending out a black sooty unburned fuel mixture from the exhaust pipe. I warmed it up and drove a few miles and it knocked less but still the same unburned sooty mixture from the exhaust. I'm not sure what happened and would welcome advice! It seems like it is running on 4 or 5 cylinders.
TIA,
steve