Read my diagnosis and description of misfiring here:-
http://www.benzworld.org/forums/messages.asp?messno=50411&id=10&view=t
could be as cheap as a sparkplug (a couple of bucks), or expensive as a new harness (US$700). I think you need to look at the leads for cylinder 1 and 4. follow them from the plug to the coil. Check the joints are connected properly. If they share the same coil, replace it.
http://www.benzworld.org/forums/messages.asp?messno=50411&id=10&view=t
could be as cheap as a sparkplug (a couple of bucks), or expensive as a new harness (US$700). I think you need to look at the leads for cylinder 1 and 4. follow them from the plug to the coil. Check the joints are connected properly. If they share the same coil, replace it.
