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Does anyone know the Prius prime spark plug type?

Discussion in 'Prime Main Forum (2017-2022)' started by Pdxprimeguy, Aug 16, 2018.

  1. Pdxprimeguy

    Pdxprimeguy Member

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    I believe it is a Denso spark plug but I don’t have the number. Does anybody know what part number it is by chance?

    My Prius is showing some signs of hesitation or sluggishness. I have about 50,000 miles on my 2017 Prius prime.
     
    #1 Pdxprimeguy, Aug 16, 2018
  2. schja01

    schja01 One of very few in Chicagoland

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    #2 schja01, Aug 16, 2018
  3. jaqueh

    jaqueh Active Member

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    50,000 miles?!?!?
     
    #3 jaqueh, Aug 16, 2018
  4. krushmoto

    krushmoto Member

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    That's what I said!
    My wife's was purchased on 4/15/17 and just broke 6300. And that's only b/c I used it to commute to work a few times.

    Nexus 6P ?
     
    #4 krushmoto, Aug 16, 2018
  5. Salamander_King

    Salamander_King Senior Member

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    Aren't they iridium plugs that supposed to last for 100k miles?
     
    #5 Salamander_King, Aug 16, 2018
  6. Pdxprimeguy

    Pdxprimeguy Member

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    I drive Alot. A whole lot. It’s been a good car. But with the weather hot and a/c on. For some odd reason the car has been a lot more sluggish when in sport mode if you will. And when at higher speeds. It just started a week or 2 ago.

    I give it premium most the time So i doubt if it’s the gas.
     
    #6 Pdxprimeguy, Aug 16, 2018
  7. PT Guy

    PT Guy Senior Member

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    How many engine miles...vs. electric miles?

    I'd think the sluggishness would be something else. Water in the gas? Very old gas or a bad tank full from a station with tankage problems? Try a good fuel system cleaner. Seafoam is one of many; follow the label instructions.
     
    #7 PT Guy, Aug 17, 2018
  8. Pdxprimeguy

    Pdxprimeguy Member

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    I have used seafoam in other old cars and it does great stuff. I fill up with arco mostly. It is possibly bad gas. Will try a different brand. Tends to happen when it is hot 90f and up and I use a/c. And Also when I put it in power mode.

    I have a 240volt charger so I use at least 35+ miles electric daily. I average 40k miles a year.
     
    #8 Pdxprimeguy, Aug 17, 2018
  9. RRxing

    RRxing Senior Member

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    From my owner's manual -
    DENSO FC16HR-C9

    I would imagine it's the same for the Prime - RTM...
     
    #9 RRxing, Aug 17, 2018
    Pdxprimeguy likes this.
  10. cntkeepmedown

    cntkeepmedown New Member

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    #10 cntkeepmedown, Aug 18, 2018
  11. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Page 714 of the Owner's Manual:

    upload_2018-8-18_9-28-28.png

    Hesitation might be bad gas, fuel filter. Maybe just run through most of the tank, fill up (at different station?) and see what that does. If no improvement, try a fuel injector cleaner with the next tank. If no improvement, then try throttle body needing cleaning, Manifold Absolute Pressure (MAF) sensor cleaning.
     
    #11 Mendel Leisk, Aug 18, 2018
    Last edited: Aug 18, 2018
  12. Since2002

    Since2002 Senior Lurker

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    Checked the air filter?

    If it just started a week or two ago it's too early to rule out bad gas.
     
    #12 Since2002, Aug 19, 2018
    dubit and Mendel Leisk like this.
  13. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Premium doesn't do anything but lighten your wallet, and it's not immune from contamination.
     
    #13 Mendel Leisk, Aug 19, 2018
  14. PT Guy

    PT Guy Senior Member

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    "Premium" isn't premium. It merely has a higher anti-knock index which is not needed for our cars. It is no better than regular at the same station.

    Try regular gas from a different station. Give it some time to work through the system. If you picked up some water from a station, it may lay in the gasoline filter. Water removal additives can get that out of there; otherwise a new fuel filter might be needed.
     
    #14 PT Guy, Aug 26, 2018
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