A rough running motor or lack of power can be caused by a failed distributor cap or rotor, ignition wires (or their resistors), or valve cover gasket leaks. If the valve cover gasket leaks, oil can pool where the ignition wire resistor connects to the spark plug. The resistor can fail and the spark plug may not fire because of a short circuit through the oil.
Rough Running Engine Due to Misfire on Mercedes-Benz 300CE
Average mileage: 225,000 (193,000–257,000)
6 people reported this problem
1 person shared problem details
1990 Mercedes-Benz 300CE257,000Visitor
engine misses cracked distributor
Internal and External engine oil & coolant leaks can develop from the head gasket and/or ti...
The engine wiring can degrade because the insulating material falls off leaving the bare wire...
I changed the breather hose and lost where the extra little hose on it connects to. finally fo...
The part that attaches the distributor rotor to the camshaft can break; the starter will still...
Is it difficult to change the oil pan gasket without having it serviced by a Mercedes Dealer ?