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  1. 2010-2013 Mazda 3 Engine and Performance
    hey guys new to the forum and new to mazda as well. I have a 2013 Mazda 3 6MT. Car drove great till about 9K miles and my check engine light came on. Initially stating a cylinder misfire P0303 . Eventually the code cleared itself and the car drove fine, about a week later CEL came on again...
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