Technician A says white or grayish powdery deposits on secondary cables at the point where they cross or near metal parts indicate that the cables' insulation is faulty. Technician B says if the spark plug wire for #2 cylinder is damaged and the other wires look good, replace only the damaged wire. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because white or grayish powdery deposits on secondary cables indicate that the high voltage is leaking due to faulty insulation. Technician B is incorrect because it's generally recommended to replace all spark plug wires as a set to ensure consistent performance and avoid potential future misfires or other issues.

Technician a Says White or Grayish Powdery Deposits on Secondary