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spark plugs

  1. 2011 mazda 3s gt 2.5 6speed 90k maintenance

    2010-2013 Mazda 3 Engine and Performance
    Hey guys, My 2011 mazda 3 sedan 2.5L 6speed is currently at 88k miles. I recently started having 2nd gear grinds (only 2nd gear) more often, and every once in a while. I did some googling and searching in this forum and it seems that its a common issue for the mazda 3. I just want to create my...
  2. Black oil on spark plug threads

    2014-2018 Mazda 3 Skyactiv Discussion
    My 2016 Mazda 3 is at 71k miles, so I figured I'd replace the spark plugs. When I pulled them out, one looked like this: There was oil on the bottom threads but the top was clean. At first I thought valve cover gasket, but now I'm thinking the piston rings might be shot. The strange thing is...
  3. Can’t fix weird idle hiccup

    2010-2013 Mazda 3 Engine and Performance
    Hello all, After changing my spark plugs (NGK Iridium Lasers) I’ve developed a strange idle “hiccup” that has proved difficult to find and fix. It’s a 2011 2.0 automatic, completely stock, and has ~93k miles. When I’m at a stop (in drive or neutral, more noticeable in drive) every 30 seconds or...
  4. How do these plugs look?

    2014-2018 Mazda 3 Skyactiv Engine and Performance
    So my 2014 Mazda3 has 37,450 miles currently on it. I finally took a look at the spark plugs. They seem a bit black and smell like melted crayons (fouled?). I took these out while the engine was still pretty hot. How do these look to you guys?
  5. 2014 Spark Plug Gap

    2014-2018 Mazda 3 Skyactiv Engine and Performance
    What is the spark plug gap on a 2014 Mazda 3 2.0?
  6. 2012 Skyactiv oil on spark plug

    2012-2013 Mazda 3 Skyactiv Engine and Performance
    Hi all, I just passed 105000 kms on my 2012 Mazda 3 Skyactiv so I figured it was time to swap the spark plugs. Everything looked okay until I got to the last spark plug (the plug closet to the drivers side). When I pulled the plug there was some oil on the threads. From what I read it looks...
  7. 2012 mazda 3 "tune-up"

    2010-2013 Mazda 3 Engine and Performance
    My baby just hit 50k miles today. 2012 mazda 3, 2.5L s. I put Simota short ram intake, but other than that, I have only changed oil and filter. What should it do for tune-up, and upkeep to get her to 200,000 miles? Lucas fuel injector cleaner? If so, how often? Any oil, or transmission...
  8. New 3 Owner with Questions

    2010-2013 Mazda 3 & Skyactiv Discussion
    As a new owner of a 2012 Mazda3 I Sport Sedan in Crystal Pearl White Mica (purchased used with 6100 miles on the clock), I waded through all the Mazda and Mazda3 Forums (and there are plenty) on the web to find the best one. The one with the best questions, insight and answers. This forum is...