Does my 2012 Cylinder #1 look OK?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by DavidinNevils, Mar 7, 2026 at 6:27 PM.

  1. DavidinNevils

    DavidinNevils Junior Member

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    I'm not sure what to make of these borescope images.

    Does the cylinder look damaged or OK, please?

    Thanks!
     

    Attached Files:

    #1 DavidinNevils, Mar 7, 2026 at 6:27 PM
  2. Hayslayer

    Hayslayer Active Member

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    Crosshatch is still there, like most. The small vertical lines don't look significant. Why is there moisture (water/coolant?) in the cylinder?

    Is that the right sparkplug or is that a gen 3 plug you're using, it looks like an SC16HR11?

    Gen 2 Denso should be an SK16R11

    I hope like crazy you're not using that gen 3 plug in your gen 2. Holy F.

    SK16R11 gen 2 thread is 14mm and reach is 19mm
    SC16HR11 thread is 12mm and reach is 26.5mm
     
    #2 Hayslayer, Mar 7, 2026 at 6:44 PM
    Last edited: Mar 7, 2026 at 6:53 PM
  3. DavidinNevils

    DavidinNevils Junior Member

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    Sorry, I'm fussing with two of our 3 Prius's and posted this in the wrong sub-group with the wrong title.

    These pics are from our Gen 3 - 2012.
     
    #3 DavidinNevils, Mar 7, 2026 at 7:31 PM
  4. DavidinNevils

    DavidinNevils Junior Member

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    Sorry, I mislabeled and mis-posted - it's our 2012. Someone else looked and thought the deposit looked like burned oil.
     
    #4 DavidinNevils, Mar 7, 2026 at 10:19 PM
  5. Tideland Prius

    Tideland Prius Moderator of the North
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    Updated titled and moved to Gen 3 section.
     
    #5 Tideland Prius, Mar 8, 2026 at 1:42 AM
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