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Engine knock @ 119,820 miles on a 2013

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Tekken, Feb 6, 2024.

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  1. Mendel Leisk

    Mendel Leisk Senior Member

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    They’re pretty close?
     
    #21 Mendel Leisk, Feb 11, 2024
  2. rjparker

    rjparker Tu Humilde Sirviente

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    #22 rjparker, Feb 12, 2024
  3. Tekken

    Tekken Member

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    Slightly less oil moisture sticking than spark plug #3. Turn out clean them all up and adjust the gap to O.41.

    Coolant temperature 195 F @ rpm 1400- 1900 on highway drive ok? Out temp 60f in socal.
     
    #23 Tekken, Feb 13, 2024
  4. ASRDogman

    ASRDogman Senior Member

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    They shouldn't need gaping. It's set at the factory, .044

     
    #24 ASRDogman, Feb 13, 2024
    Mendel Leisk likes this.
  5. Tekken

    Tekken Member

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    I have 2 set of 4 plugs. They all factory set @ less 0.41. aprox 0.39 when i measured
     
    #25 Tekken, Feb 13, 2024
  6. ASRDogman

    ASRDogman Senior Member

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    Perhaps I got the numbers wrong...

     
    #26 ASRDogman, Feb 13, 2024
  7. Mendel Leisk

    Mendel Leisk Senior Member

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    You shouldn’t need to adjust gap on modern plugs. They’re designed for one gap, gapped thus at the factory. And they don’t wear to speak of. If the gap is off they’re defective, maybe dropped or something.
     
    #27 Mendel Leisk, Feb 13, 2024
  8. Tekken

    Tekken Member

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    There are alot fake plugs out there. Even some auto part can't tell. Always measure the correct gap according to the Toyota factory.

    A
     
    #28 Tekken, Feb 14, 2024
  9. rjparker

    rjparker Tu Humilde Sirviente

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    A bad plug causing a misfire code won’t go away in 25 seconds and won’t throw codes on a different cylinder from time to time.
     
    #29 rjparker, Feb 14, 2024
  10. Tekken

    Tekken Member

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    May have to find an authentic plugs from Toyota dealer this today.. too may counterfeit out there. Bad plug can cause misfire and can't imagine how many misfired when driving between EV to (ICE)
     
    #30 Tekken, Feb 14, 2024
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