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International Automotive Technicians Network
Re: Name that tune - 2014 Mazda3 2.0L misfire fixed
Posted to Technical Discussion Forum on 3/22/2024

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Coil tests may have acceptable results yet fail to fire the spark plug. COP coils can carbon track and behave badly, same for the spark plug. But the *service bulletin indicated one mfg's coils were ... Login to read more.