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  1. Cylinder Deactivation

    2019+ Mazda 3 Discussion
    How does Mazda’s Cylinder Deactivation system differ from Honda’s? I’ve read about Mazda using oil pressure to control the operation of the system. How does Honda’s system work? Is Mazda’s implementation better and more reliable? I can only assume that Mazda’s system is a different design...
  2. Is it just me? (New engine ruins this amazing car)

    2019+ Mazda 3 Discussion
    I love this car so SO much (just like everyone else) but I had been having really noticeable gear changes in my lower gears like it feels underpowered or something. Took it into the dealer and test drove 2 mother 2019 3s (both a Mexico one and Japan one) they both had the same issue! Even the...
  3. cylinder deactivation monitor

    2019+ Mazda 3 Discussion
    Is there a cylinder deactivation display? On the fuel efficiency monitor display? I don't see anything and I don't know where to look.
  4. Gen3 front/rear brake caliper piston size? Master cylinder diameter?

    2014-2018 Mazda 3 Skyactiv Suspension & Handling
    Anyone aware of what is the diameter of brake piston in front and rear calipers? Japan built cars. Also looking for the diameter of the master brake cylinder. Want to do some calculations....
  5. 2014+ Clutch master cylinder replacement / upgrade

    2014-2018 Mazda 3 Skyactiv Engine and Performance
    A project to upgrade the hydraulic transmission components on the BM 2014-'18 Mazda 3 6MT: Why? 1. I strongly dislike that Mazda has put plastic parts where I believe aluminum / steel should be used for strength, reliability and longevity. I want to replace it with a universal, easy to...
  6. Mazda 3 2011 master cylinder bleeding procedure

    Suspension / Brakes
    Hi everyone, I'm trying to bleed my master cylinder on a mazda 3 2011 and I see tha the master cylinder has 4 bleeding screws, just wondering what is the proper way to bleed this kind of master cylinders since is the first time I see one with 4 bleeding screws!! If anybody can help me on this I...
  7. Clutch issues from leaking brake master cylinder?

    2004-2009 Mazda3 Discussion
    Last week I noticed that shifting was getting more and more difficult, so as soon as I got home I checked the fluid level — sure enough it was extremely low. I check fluid levels weekly so a recent leak was my conclusion. On top of that, it seemed like the clutch pedal was beginning to feel a...
  8. #3 cylinder coil failure - 2015 sGT model

    2014-2018 Mazda 3 Skyactiv Engine and Performance
    Hi all -- Not my first post by a long shot -- I was PuMoDi until the board got hacked and people had to change their passwords. For some reason, mine was unchangeable (it was not sending the change to my registered email address) and when I notified administrators way back when I never heard...
  9. P0302, cylinder 2 misfire, keeps popping up

    2010-2013 Mazda 3 Engine and Performance
    I have a 2012 skyactiv. I'm getting this code which suggests a cylinder 2 misfire was detected. 95k miles. NGK Plugs have maybe 10k on them. I never got this code before doing the plug change, but now it comes and goes from time to time. I'm noticing no performance issues. If I clear the code...
  10. WTB Broken 2014-2016 Clutch Master Cylinder

    Mazda 3 Parts - Buy / Sell
    I know this may sound strange, but I would like to buy a BROKEN or SPARE clutch master cylinder from a 2014 -2016 mazda3 (preferably a manual sGT just to be sure it is the same part I will be replacing on my own car). I need it to take measurements so that I can replace the weak plastic OEM part...
  11. P&P swap cylinder head 2.5L gain more HP TQ?

    2014-2018 Mazda 3 Skyactiv Engine and Performance
    Some dumb question want to be answered. I got a 2.0L and want to increase even more tq and hp. I am thinking about p&p cylinder head. Anyone ever think about swap a P&P cylinder head 2.5L to a 2.0L? Is it possible for doing this How many power it should gain? My current mod for my 2.0l: E85 5...
  12. Sound of 4 cylinder engines

    2014-2018 Mazda 3 Skyactiv Engine and Performance
    Hey guys, First and foremost I'd like to point out what a lovely looking and handling car the Mazda 3 is. Loved it since I first saw the new design. The Kodo design language makes it look aggressive and tough. Sadly the sound that comes with the stock car is far from aggressive and tough. In...
  13. Misfire in Cylinder 4

    2010-13 Mazdaspeed 3 Engine and Performance
    So last night as I was driving on break, I was passing this car and in 4th gear blew past him (~85-90ish). After I did that and went to normal speed (~55pmh) I saw that my CEL came on. I had it looked at today at a local auto part store and it said that cylinder 4 misfire. I then talked to a...
  14. 2014 Mazda 3 dead on road after 4 months / 5,000 miles - P0302 Cylinder #2 Misfire

    2014-2018 Mazda 3 Skyactiv Discussion
    Not to happy that my 2014 Mazda 3 with 5,000 miles died on the road. I was next to AutoZone and the code that was scanned was P0302 Cylinder #2 Misfire. Had to get it towed to the nearest Mazda dealer. It took 2 days to get a new coil and get me back on the road. The Royal Mazda in...
  15. Possible Master/Slave Issue

    2010-2013 Mazda 3 Engine and Performance
    Long story shot, everyone here for sure knows by now that the second gen 3 has a finicky transmission. Some people report little to no issues, some people have had clutches "explode" etc. I've replaced my mounts all around, JBR 88a RMM, JBR 80a PMM, TRZ Transmission mount. I installed solid...
  16. question about brake cylinder cap

    2010-2013 Mazda 3 & Skyactiv Discussion
    Hey everyone, I'm wanting to make a pressure brake bleeder for my mazda 3 and have all the parts needed to make the pressure bleeder but have found that the mazda brake fluid reservoir cap costs something like 15-20 bucks which is a complete rip off if you ask me. Does anyone know of an...
  17. 2.5 cylinder head Dirt cheap

    2010-2013 Mazda 3 Engine and Performance
    someone please outbid me, 3 hours left, I dont really want it anymore. 2009 2010 2011 mazda 3 cylinder head 2.5 complete | eBay 32$ will outbid me comes with valves, springs , cams the works