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Q: I have a misfire code, and i woild like to know how to determine if it's the ign on 2000 Cadillac DeVille

I remember putting gas in my car and it started to misfire. The check engine light blinks all the time. The car ran fine up until that point. Since then, I have burned that gas out and still a misfire. I want to know how to eliminate the ignition coil because I had plugs, and boots changed.
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SCAN CODES TO DETERMINE WHICH CYL TO START WITH, THEN SWAP COIL WITH ANOTHER CYL AND SEE IF MISS FOLLOWS THAT COIL IF SO MOST LIKELY THE COIL IS BAD
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