Problem Reports
Mercedes-Benz ML55 AMG
Report: Worn spark plug wires may develop micro cracks in insulation
Mercedes-Benz ML55 AMG Problem
Model Years Affected: 2000, 2001, 2002, 2003
Verified
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.