Rough Running Engine Due to Misfire on Mercedes-Benz 560SEL

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.

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Average mileage: (–)
2 model years affected: 1990, 1991
2 people reported this problem
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