Rough Running Engine Due to Misfire on Mercedes-Benz 300SEL

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.

RepairPal Verified
Average mileage: (–)
2 model years affected: 1990, 1991
2 people reported this problem
0 people shared problem details
Related Items:
Internal and External engine oil & coolant leaks can develop from the head gasket and/or ti...
The part that attaches the distributor rotor to the camshaft can break; the starter will still...
no fuel is present at end of fuel line before injecter.Presure present at distributor
A coolant leak may develop form the Radiator due to degradation of its plastic components. Repl...

Related Content