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Which risk does an unsecured starter cable present?

  • A.Chafing to earth producing a fire
  • B.Voltage drop, which increases as the cable moves and therefore reduces the current available for cranking
  • C.None
  • D.Interference with the engine management, which is caused by the magnetic field surrounding the heavy conductor

Answer: A

A cable rubbing through to the block shorts the battery through its full capacity and the harness burns. Magnetic interference is genuinely a design consideration, which makes the last option a real if lesser concern. Clipping is a safety matter. A symptom that appears under one condition and not another is what narrows the diagnosis quickly. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb.

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