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Valves gasket and spark plugs

Discussion in 'Gen 3 Prius Main Forum' started by H.S., Jun 8, 2021.

  1. H.S.

    H.S. Junior Member

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    Hello all
    I was wondering as I approach 100k miles if I need to change the valve cover gasket and spark plugs ? Other maintenance things I should pay attention to at 100 k?

    thanks
     
    #1 H.S., Jun 8, 2021
  2. Mendel Leisk

    Mendel Leisk Senior Member

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    US sched says 120k miles (or 12 yrs, whichever comes first) IIRC, for plugs.

    valve cover gasket: unless leaking I’d leave it be, let sleeping dogs lie.
     
    #2 Mendel Leisk, Jun 8, 2021
  3. H.S.

    H.S. Junior Member

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    What does IIRC mean ? Thank you
     
    #3 H.S., Jun 8, 2021
    Mendel Leisk likes this.
  4. bisco

    bisco cookie crumbler

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    if i recall correctly.

    i would follow the toyota maint. schedule for your model and year.

    add egr circuit cleanse, and tranny fluid change. test the 12v.
     
    #4 bisco, Jun 8, 2021
    Mendel Leisk and Aaron Vitolins like this.
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