What would cause a spark plug to look like this?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by priuslyfe, Jan 29, 2024.

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  1. Mendel Leisk

    Mendel Leisk Senior Member

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    No valve cover removal experience on Toyota, would guess an hour. I don’t think wipers need to come off on Gen 2??

    I’ll see what repair manual says, post an excerpt. It may spec some dabs of form-in-place gasket for example.
     
    #21 Mendel Leisk, Jan 30, 2024
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  2. priuslyfe

    priuslyfe Member

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    thanks again.

    I had such a traumatizing experience having to fix my car out of necessity in cold weather (15degrees or so) that working in the cold is almost like a phobia at this point. I remember laying on my back on the cold ground for hours and my bone-marrow feeling frozen.
     
    #22 priuslyfe, Jan 30, 2024
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  3. Tombukt2

    Tombukt2 Senior Member

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    Well that's right You just check it out and see what you see The valve cover gasket is probably 15 years old you know it's like a 45-minute job to do on this car You don't have to remove the wiper tray You can change the plugs without messing with the wipers in this car unlike the Gen 3 so this is a pretty quick job but if it's not leaking sure just leave it sounds like you'll be out of this car well before it's time anyway just because mileage scares some people hell I just worked on one of these cars it has like 400 and I don't know what 90,000 mi on it or something $479,000 and on the original battery Ladies had the car since it was pretty much new.
     
    #23 Tombukt2, Jan 30, 2024
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  4. Mendel Leisk

    Mendel Leisk Senior Member

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    Repair Manual info on valve cover removal/install:



    For "seal packing" I think Permatex Ultra Black would do. I've got a tube of Ultra Grey I've always used for stuff like that, no problems with it.
     
    #24 Mendel Leisk, Jan 30, 2024
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  5. priuslyfe

    priuslyfe Member

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    UPDATE:

    Well it's been over 500 miles since I changed that plug and finally got around to checking if there was oil on the spark plug today. None. Dry as a bone. I don't know why the other spark plug got so worn away and how there was oil past the threads but no more.

    Was gonna change my valve cover as a precautionary measure but now I'm like why fix what ain't broke?

    thanks for the advice.
     
    #25 priuslyfe, Feb 26, 2024
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