12 13... Spark-plug faults

2013 Mini Cooper Countryman, Standard TransSECTION 12 13... Spark-plug faults
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW X5, 2006 BMW X3, 2005 BMW X5, 2005 BMW X3, and 2004 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Evaluation of sparking period at idling speed.

  1. Normal ignition voltage peak Spark plug is OK.
  2. Low ignition voltage peak Small electrode gap.
  3. High ignition voltage peak Large electrode gap.

Fig 1: Evaluation Of Sparking Period At Idling Speed
G00313213Courtesy of BMW OF NORTH AMERICA, INC.

Evaluation of sparking period at idling speed.

Normal combustion period, spark plug is OK.

Fig 2: Evaluation Of Sparking Period - Normal Combustion Period
G00313214Courtesy of BMW OF NORTH AMERICA, INC.

Long combustion period, small electrode gap.

Fig 3: Long Combustion Period
G00313215Courtesy of BMW OF NORTH AMERICA, INC.

Short sparking period, large electrode gap.

Fig 4: Short Sparking Period
G00313216Courtesy of BMW OF NORTH AMERICA, INC.
RENDER: 1.0x

NO RELATED

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