Question about 2004 Mazda 6

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I changed the spark plugs on my 2004 Mazda6s V6. The car idles great and is smooth at highway speeds. Really anything above 2K rpm it works great. When it tries to accelerate between 1400rpm and 2200rpm it seems to miss fire now, but it never did before. I used the recommended NGK Iridium plugs, any thoughts on what could be causing this? Also, it doesn't always is fire in that range, but about a third of the time it does.

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Distributor cap lol...check plug gap, the plugs come pre gapped, but they aren't just used for the mazda 6. Be careful not to break the ground electrode or the tip.

Posted on May 10, 2012

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I would check to see if your distributor cap has a crack on it somewhere close to the diodes,and you can check for a bad plug wire also,I do this when its dark so I can locate it easier,most of the time its the boot that is dried and cracked,amd is arching on the eng. block.

Posted on Jul 26, 2009

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