Just did a C280 this week where the open circuited coil resistor had driven coil output to the point where the spark was arcing from the output to the other cylinder to ground. The terminal was eroded totally and the bottom of the hole had fallen totally off.

One should remember that the coil fires two plugs on each firing. One plug is at the end of the exhaust stroke and the other at the end of the compression stroke. only one plug firing is of any use, but the circuit isn't complete without the other spark firing.

I would be extremely surprized to see a misfire code on a 94 "E" car

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician