Car Problem Reports

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

Mercedes-Benz ML430 Problem
3 Reports
Me Too

Model Years Affected: 1999, 2000, 2001


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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