Why You Should Check Your Fuel Injectors

Discussion in 'Mazdaspeed 3/6 Fuel, NOS, Meth, & Water Injection' started by Solarsurge, Aug 17, 2018.

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  1. Solarsurge

    Solarsurge Greenie Member

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    There’s a lot that can cause KR, but clogged fuel injectors are a pretty good way to start. I’ve seen injector tips with crud stalactites partially blocking the stream. The injectors are supposed to spray a fine mist and anything inhibiting or blocking that mist spray will make ignition less uniform.


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    Solarsurge, via a mobile device, Apr 12, 2021
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  2. Remi Pokrywka

    Remi Pokrywka Greenie N00B Member

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    I recently did injector work on my speed 3. I used a hammer to pry the rail off VERY GENTLY. Do one side at a time, meaning a little on the left and if it pops out move onto the next side and work your way out.

    Not the injectors but the fuel rail with a hammer for leverage. My injectors were pretty messed up so they popped out fairly easy.
     
    Last edited by a moderator: Apr 12, 2021
    Remi Pokrywka, Apr 12, 2021
    #22
  3. Duey1083

    Duey1083 Greenie Member

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    All me and @Awafrican can say on this matter is...YES...buy the CS injector puller tool.

    That tool is worth its weight in gold if you need it.

    Also, Mazda will just try and sell you snake oil to clean the injectors. Only way is to remove them and have a shop professionally clean and flow/flow-pattern test them. Cleaning them externally ONLY won't do anything unless you have the carbon stalagtites. A bit of carbon buildup on the tip is completely normal.

    The injectors are ultrasonically cleaned, with filter baskets and orings replaced.
     
    Last edited: Apr 14, 2021
    Duey1083, via a Samsung mobile device, Apr 14, 2021
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  4. Anthony Pham

    Anthony Pham Greenie N00B Member

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    Sorry for replying to a older thread but can you happen to confirm the studs and nuts needed? I saw 2 SKU’s floating around online. I have a fastenal hook up so it’ll help.
     
    Anthony Pham, via an iPhone, Sep 1, 2021
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  5. Awafrican

    Awafrican Moderator Gold Member

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    You can re-use the OEM injector bolts but studs make things much easier after especially for torquing.
     
    Awafrican, via a mobile device, Sep 1, 2021
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  6. Anthony Pham

    Anthony Pham Greenie N00B Member

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    I replaced my injectors the first time.. stripped the oem ones. I’m on my second time right now and my bit broke inside the head, I used anti seize on the first time too.

    I want to change to the studs/nuts, just trying to find the correct ones/SKU’s since I have a Fastenal plug.
     
    Anthony Pham, via an iPhone, Sep 1, 2021
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  7. Awafrican

    Awafrican Moderator Gold Member

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    Oh okay, you'll need the stud and nut, cut the OEM bolt and use the washer it comes with detailed in this thread

    https://mazdaspeeds.org/index.php?threads/torx-injector-bolts.11263/#post-83417

    Here's the part numbers Capture+_2020-09-27-18-35-19 (1).png
     
    Awafrican, via a mobile device, Sep 1, 2021
    #27
  8. Anthony Pham

    Anthony Pham Greenie N00B Member

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    Anthony Pham, via an iPhone, Sep 1, 2021
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