Intake Manifold and EGR Cleaning/Replacement - How hard is it really?

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by ksyolsen, Oct 26, 2025.

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  1. Mendel Leisk

    Mendel Leisk MMX GEN III

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    What 165k miles will do:

    upload_2025-11-15_10-56-46.png

    Definitely NOT what the engineers envisioned, I'd wager.
     
    #61 Mendel Leisk, Nov 15, 2025 at 1:57 PM
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  2. Mendel Leisk

    Mendel Leisk MMX GEN III

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    I meant pic of the intake manifold mating surface, the black plastic thing. :)

    Bump exposure enough to see the degree of clogging of the small diameter EGR passages, one per port.
     
    #62 Mendel Leisk, Nov 15, 2025 at 1:59 PM
  3. ksyolsen

    ksyolsen Junior Member

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    Gotcha haha sorry about that. Here ya go

    I’ve done an initial pass on cleaning but will probably do some more for good measure.
     

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    #63 ksyolsen, Nov 15, 2025 at 2:00 PM
  4. Mendel Leisk

    Mendel Leisk MMX GEN III

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    How were these, pre-cleaning:

    upload_2025-11-15_11-3-16.png

    Cylinder one tends to be first to fully clog (at left end, as you stand at front of car).
     
    #64 Mendel Leisk, Nov 15, 2025 at 2:03 PM
  5. ksyolsen

    ksyolsen Junior Member

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    Definitely some build up. Not completely blocked by any means though.

    but some nice chunks and bits came out with a brass brush.
     
    #65 ksyolsen, Nov 15, 2025 at 2:04 PM
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  6. ksyolsen

    ksyolsen Junior Member

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    Need to do some more cleaning but they’re cleared out mostly
     

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    #66 ksyolsen, Nov 15, 2025 at 2:06 PM
  7. Mendel Leisk

    Mendel Leisk MMX GEN III

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    You'll be buttoning up by supper time. (y)
     
    #67 Mendel Leisk, Nov 15, 2025 at 2:12 PM
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  8. ksyolsen

    ksyolsen Junior Member

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    @Mendel Leisk having trouble getting the holes for the long stud to line up without forcing it down. I have the bottom stud installed to the exhaust pipe and nothing else is bolted down but I really have to force it down to line up and it’s difficult to thread in.
     

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    #68 ksyolsen, Nov 15, 2025 at 3:24 PM
  9. ksyolsen

    ksyolsen Junior Member

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    I got it but it was a tight fit
     

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    #69 ksyolsen, Nov 15, 2025 at 3:36 PM
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