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

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.

RepairPal Verified
Average mileage: (–)
3 model years affected: 1999, 2000, 2001
3 people reported this problem
0 people shared problem details
Related Items:
An exhaust leak may develop due to cracked welds on the front catalytic converter. Replacement...
The insulation at the sunroof and on the inside of each door window glass can peel off. The lo...

Related Content