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factory plugs 2010 and death rattle

Discussion in 'Gen 3 Prius Technical Discussion' started by Tombukt2, Sep 27, 2023.

  1. Tombukt2

    Tombukt2 Senior Member

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    Anything going on with this My other half was telling me that she read somewhere online I don't want to say it was here that someone put in the wrong spark plugs in a generation 3 and it caused the death rattle than they changed to the factory double iridium or some such nonsense? I haven't heard anything about this Is this even a thing? I think I have what SKS 20R11s in mine and believe that number comes to mind I don't know the four digit stock number.
     
    #1 Tombukt2, Sep 27, 2023
  2. Higgins909

    Higgins909 Member

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    I'm not sure about car engines but with my 2 stroke lawn stuff, the wrong plug will can make it run worse and better at the same time.
     
    #2 Higgins909, Sep 28, 2023
  3. Tombukt2

    Tombukt2 Senior Member

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    The dealer is telling me for my 2010 2Z FXE I'm supposed to have SC1611s I believe that's right I called the dealer I was thinking it was SX16 I was also considering the twin tip or the TT Nippon denzo plugs which I have I think in a 1z but not the two Z.
     
    #3 Tombukt2, Sep 28, 2023
  4. Mendel Leisk

    Mendel Leisk Senior Member

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    Close, the the (current) stock plug is Denso SC16HR11. Owner's Manual says Denso SC20HR11. The SC16HR11 is slightly hotter, guess Toyota decided there was a bit too much deposits happening, so revised the plug.

    I got some last fall through a dealership (surprisingly the best price local to me), and the box had a Toyota part number: 90919-01275. It's the Denso plug inside though.
     
    #4 Mendel Leisk, Sep 28, 2023
  5. Mpdcnva

    Mpdcnva Member

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    If you have a death rattle. Remove the antifreeze cap o ring and drive for a couple days. If your death rattle stops. You need a head gasket. Simple test.
     
    #5 Mpdcnva, Sep 28, 2023
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