What is your question?
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What is your question?
My engine light on my 2007 Mercury Mountaineer came on so I did a diagnosis and it said it was my spark plugs but I just had my spark plugs done they're brand-new
1 Reply
Evidently your diagnostic device is wrong .. Never seen one that actually said what the problem is .. I always had to retrieve the trouble codes then start the diagnosis & testing to find out exactly what set the code(s) ...