Worn spark plug wires may develop micro cracks in insulation on Mercedes-Benz ML430

Problem overview

As the spark plug wires age and are exposed to heat cycling, they start to develop micro cracks in the insulation around the resistors, which causes misfires and poor fuel economy.

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Worn spark plug wires may develop micro cracks in insulation on Mercedes-Benz ML430

Problem overview

Mercedes-Benz ML430 vehicles with this problem

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Worn spark plug wires may develop micro cracks in insulation on Mercedes-Benz ML430

Problem overview

Mercedes-Benz ML430 vehicles with this problem

Repairs related to this problem

Spark Plug Wire Replacement

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