Worried about starting noise

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by domeus, Jun 19, 2022.

  1. domeus

    domeus Junior Member

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    Just noticed my 2012 prius+ (V) rattles one second after ICE startup on cold engine. Is it normal?

     
  2. Air_Boss

    Air_Boss Senior Member

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    How many miles, and how is your oil quantity?
     
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  3. bisco

    bisco cookie crumbler

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    often, it is the very beginning of a head gasket leak, unfortunately.

    have you cleaned the egr circuit?
     
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  4. domeus

    domeus Junior Member

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    Total 330000km. Head gasket was replaced 30000km ago by professional. Its causing differend style rattling and shaking. New HG solved it. Also whole EGR system was cleaned. Im thinking now that the noise is coming from vvt-i.. And what I found it is normal in some situations for cold engine start.
    Im using mobil 1 0w20 oil and oil level is OK. No oil consumption on change interval, and also coolant level stays topped.
     
    #4 domeus, Jun 20, 2022
    Last edited: Jun 20, 2022
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  5. rjparker

    rjparker Tu Humilde Sirviente

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    Does not sound or look like a head gasket yet... maybe your variable valve timing needs an oil change
     
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  6. Air_Boss

    Air_Boss Senior Member

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    Are there filters in the vvti solenoid and valuing systems? Similar issues occur on the Honda vvt system.
     
  7. domeus

    domeus Junior Member

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    Now if im really trying to think, maybe it makes the same noise before last oil change I made. After that noise is gone. So last oil change was 8000km ago. Maybe time to change oils like @rjparker said. I will call problem solved and case closed. Thank you all.
     
  8. domeus

    domeus Junior Member

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    Update: changed oils, and noise is now gone.
     
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  9. Air_Boss

    Air_Boss Senior Member

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    That’s the before and after on the Honda VTEC vvt solenoid, too.
     
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