White residue on spark plugs
270

Asked by Booppalla1979 Dec 30, 2018 at 10:02 PM about the 2012 Subaru Outback

Question type: Maintenance & Repair

White residue on spark plugs?  Decided to change them
when dash lights came on...cruise and brake lights blink
while ABS and check engine stay on steady.  Car runs more
smoothly when they are off, which only happens for the
first 500 miles after an oil change.   Thoughts?

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