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  1. Oil Pump Pickup Installation - 2004 Mazda 3 2.3L

    2004-2009 Mazda3 How-To Guides
    I need help with installing the oil pickup tube to the oil pump of my 2004 Mazda 3 2.3L engine. The pickup tube has a recess that looks like it is for a regular o-ring. The gasket (?) that was originally installed does not look like a regular o-ring. The rings profile is not circular. It is...
  2. Timing gear alignment - 2005 2.3L 5sp

    2004-2009 Mazda3 Discussion
    Hi, Rod bearings were exchanged on a 4 cyl 2.3L 5 sp and in process the timing gear box was dropped to access #2 and #3 . (pictures attached) With crankshaft movement it seems the timing gears are now misaligned. How can timing gears be properly aligned? Thanks!
  3. Oil Pan 2.0L to 2.3L

    2004-2009 Mazda3 Discussion
    I have a 2007 non turbo 2.3L engine and I was curious if a Oil Pan from a 2.0L will fit on my car? It seems all the bolt holes match up. Would like to know before I drop the broken pan and try to replace TIA
  4. Rattling/grinding noise under hood 2004 2.3l

    2004-2009 Mazda3 Discussion
    I recently started my car and heard a loud noise coming from the engine. It went away/quieted down, so I drove the 5-10 minutes back home. I go out the next day and I still hear a noise, not like it was though. Seems to kinda come and go. Drove it for a few minutes to see if it went away, and...
  5. WTB: Vibrant / OBX headers 2.3L for ‘07-‘09 mz3

    Mazda 3 Parts - Buy / Sell
    As the title says, I’m looking for headers to put under the hood, ran stock exhaust manifold for awhile. All the vendors I checked seem to be out of these discontinued items. Hoping to eventually come across some 3 being parted out for good deals but I’m adamant about finding this. Thanks for...
  6. HELP! Will 2007 2.3L fit in my 2004 Mazda 3 hatch?

    2004-2009 Mazda3 Discussion
    My 2004 Mazda3s is a manual and the only motor I can find right now (that's affordable) is from a 2007. Should I go for it?
  7. Mazda3 Non-Turbo 2.3l

    2004-2009 Mazda 3 Performance & Mods
    Hi Forum, I am new to the boards and am about to possibly purchase a Mazda3 2.3l non-turbo from family. I am looking into what is possible for just cruising around with a bit more under the hood, and better handling, exhaust, etc... I am looking for some good resources on the following...
  8. 06 Mazda3 -2.3l Sudden Drop mileage

    2004-2009 Mazda3 Discussion
    Hi All Within one tank of fuel my mileage went from 29-30 to around 20/21mpg. I have tried everything I can think of to correct the problem without any effect. What I have done so far : 1) Replaced spark plugs - The old ones looked OK, no unusual build up. 2) New Filter 3) New MAP sensor...
  9. 2007 2.3L 5 speed Automatic transmission issues

    2004-2009 Mazda 3 Performance & Mods
    I have a 2007 Mazda 3 s with the 5 speed automatic The fluid is not black or burnt smelling at all, but it is darker, almost a purple color, and I'm not sure how/if I should go about changing or flushing it. I just bought the car with 103k miles and I have no record of it being replaced, so I...
  10. 2007 2.3L Mod Reviews

    2004-2009 Mazda 3 Performance & Mods
    I picked up a 2007 2.3L 5spd hatch fully loaded with 120k for under 3k, so I had some mod money to play around with. I tried to do everything on a budget and all the work was simple enough for a DIY mechanic to tackle. Here are my recommendations for those out there with new-to-them 3s in order...
  11. Spin on oil filter mod for the 2.3L engines

    2004-2009 Mazda 3 Performance & Mods
    I got tired of dealing with the cartridge style filters, so I did the conversion to spin-on. It's not hard at all. I got about $20 in this mod. Parts required: Everything for a standard oil change, plus 1L5G-6884-BA oil filter adapter (mine came from a Ford Fusion) LF02-14-342 gasket...
  12. 2005 Mazda 3s 2.3L manual trans abs non abs

    2004-2009 Mazda3 Discussion
    I'm putting a new transmission in my 2005 Mazda 3s and it has a manual transmission. However I wanted to know the difference between the trans with abs and the trans without abs. My car has abs and I can't find a trans anywhere close with abs only without. I was curious if I could use a trans...
  13. 2008 Mazda 3 2.3L Starting Issue

    2004-2009 Mazda3 Discussion
    Hey guys, made an account here just to post this problem that recently happened to my Mazda (hatchback, auto trans) As the title says my car won’t start. When I turn the key there is no click noise from the relay or knock from the starter solenoid. The only way for me to start the car is to...
  14. Can i turbo the stock 2.3L?

    2004-2009 Mazda 3 Performance & Mods
    I was wondering if i would be able to turbo the stock 2006 mazda 3 hatchback engine. If so what is the recommended turbo for the stock engine. I've been meaning to do this for a bit. And is there any turbo kits worth looking into?
  15. 2006 Mazda 3 2.3l Transmission question

    2004-2009 Mazda3 Discussion
    Howdy, just wanted to ask if a transmission from the previous year (2005), will fit a 2006 2.3L automatic. Any help would be fantastic.
  16. 2005 Mazda 3 2.3L engine replacement

    2004-2009 Mazda3 Discussion
    I have a 2005 Mazda 3 with a blown 2.3L engine. I've been looking for new engines and noticed that they all have coil packs and plug wires, while the engine in my car now has coil on plugs. Will an engine with plug wires bolt right in to my car with no problems? Could I just transfer over the...
  17. Timing difference in 2.3L engine

    2004-2009 Mazda 3 Performance & Mods
    So I bought an 05 3i 2.3L for $800 with a shot engine (rods kicked through the block in 3 places). Then I bought a slightly damages 2.3 from a junkyard to make a good one out of two. Then came my problem as I am reassembling the junkyard engine (after a complete teardown) I come to my timing...
  18. 2008 mazda3 s 2.3l TCM

    2004-2009 Mazda3 Discussion
    does anyone know much on this TCM issues with mazda3 2.3l automatic when the AT light comes on and the car does not run at full speed, and won't shift gears. And if so where and how did you fix this problem?
  19. My intro thread and first question: 2008 Mazda 3 GT 2.3L and MazdaSpeed

    2007-2009 Mazdaspeed 3 Performance & Mods
    Wrong section, please delete Wrong section, please delete
  20. FS: 2006 Mazda3 S Touring 4-door, 2.3L DOHV, 5-speed manual

    South Central
    141,109 mi Asking $4,600, or best offer This RARE model 2006 Mazda3 S model in Black Mica, with 141k miles, features the upgraded Touring package and a five-speed manual transmission. Exterior and performance features include a cleanable K&N air filter, 17-inch, satin black Motegi Racing...