Question about 2003 Mazda Mazda6

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Check engine light came on and the diagnostic says #3 cylinder misfire. The engine bucks at times when accelerating. What could be the problem?

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There could be several problems. I'll start with the easiest to hardest, First a bad spark plug next a spark plug wire then next thing to check is the coils it getting fire? By pulling the plug wire off #3 and putting a screw driver in it get it close to ground about 1/4 inch and watch if it arcs, if it does then it could be one of the following. Fuel injector going bad on #3 or valve adjustment on #3 so you can check the plug the plug wire and the coil and if you had a noid light you could check for injector pulse if it has a pulse then injector may be failing mechanically or electrically let me know if you need more help and please rate me if this answered your questions.

Posted on Jul 30, 2009

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