Thread: Need advice: One of my spark plugs is "gummy" (see picture)
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      10-04-2012, 01:38 PM   #3
MaximusJ
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Drives: 340Xi MG 2017
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2017 BMW 340XI (F30)  [4.50]
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It would be the right time to do it before the misfires happens. Bad plugs can wear out your coils. WAY cheaper to replace the plugs then the coils.
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