Valve train noise

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Dale Casey Acker, Oct 28, 2025 at 9:19 AM.

  1. Dale Casey Acker

    Dale Casey Acker Junior Member

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    Can someone please tell me why my valve train is sounding like this after head gasket replacement. It will only run for a few seconds bc I have the valve cover off so I could try and figure out what is going on. All the valve spring caps are on so it isn't that. I am lost here.

     
    #1 Dale Casey Acker, Oct 28, 2025 at 9:19 AM
  2. bisco

    bisco cookie crumbler

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    no link? how many miles on her?
     
    #2 bisco, Oct 28, 2025 at 2:20 PM
  3. bisco

    bisco cookie crumbler

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    this is a gen 3 forum, i see you have a 2008?
     
    #3 bisco, Oct 28, 2025 at 2:21 PM
  4. Dale Casey Acker

    Dale Casey Acker Junior Member

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    Its working on my end... try this one

     
    #4 Dale Casey Acker, Oct 28, 2025 at 2:27 PM
  5. Dale Casey Acker

    Dale Casey Acker Junior Member

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    I also have techstream but not sure that will help with his because there are no codes related to ignition
     
    #5 Dale Casey Acker, Oct 28, 2025 at 2:28 PM
  6. Dale Casey Acker

    Dale Casey Acker Junior Member

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    This is on another 2010 I just picked up
     
    #6 Dale Casey Acker, Oct 28, 2025 at 2:29 PM
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  7. bisco

    bisco cookie crumbler

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    all i see is 'allow google to access your cookies'
     
    #7 bisco, Oct 28, 2025 at 2:30 PM
  8. bisco

    bisco cookie crumbler

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    how many miles on her?
     
    #8 bisco, Oct 28, 2025 at 2:30 PM
  9. Dale Casey Acker

    Dale Casey Acker Junior Member

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    198000. I just did the head gasket on it
     
    #9 Dale Casey Acker, Oct 28, 2025 at 2:31 PM
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  10. Dale Casey Acker

    Dale Casey Acker Junior Member

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    Click allow and the video should be there
     
    #10 Dale Casey Acker, Oct 28, 2025 at 2:31 PM
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  11. Mendel Leisk

    Mendel Leisk MMX GEN III

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    I'd make a video, upload to YouTube, post a link here. That works seamlessly.
     
    #11 Mendel Leisk, Oct 29, 2025 at 9:30 PM
  12. Dale Casey Acker

    Dale Casey Acker Junior Member

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    #12 Dale Casey Acker, Oct 30, 2025 at 9:38 PM
  13. Dale Casey Acker

    Dale Casey Acker Junior Member

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    I also pulled the lifters out this morning and cleaned them, made sure they were all compressing and springing back and reinstalled. No real change. And for anyone that's wondering yes you can remove the rockers and lifters without removing the timing chain and cams. It's not the easiest especially the ones closest to the gears but definitely doable. Just remove all the retainers and pry the cams up as much as you can on the free end, wedge something under them to hold them up and you can work the rockers and lifters out from under them.
     
    #13 Dale Casey Acker, Oct 30, 2025 at 9:46 PM
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