Reply To: Had very interesting Spark plug Failure, maybe this info could help others

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August 16, 2019 at 8:22 pm #16122
John Harte

Perhaps same. 07 GSA 69k similar staining that I thought was just dirt from off road.  Rode about 150 miles then sudden loss of power and compression.  Towed to BMWSEM, no verdict yet.