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2011 Prius startup noise

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Raphael Muscarelle, Oct 5, 2019.

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  1. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    Anyone have torque specs on engine rebuild related bolts

    Posted via the PriusChat mobile app.
     
    #21 Raphael Muscarelle, Oct 5, 2019
  2. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    More background on this becouse I just was reminded that I toped off the oil just before the symptoms started. So I'm figuring the ring blow by is forcing oil into throttle body then getting pulled into pistons causing misfire at startup untill the oil is cleared.

    So fix would then be ring job and mide as well pop new in bearings and maybe new timing chain. Maybe lap the valves as long as head is off. Along with makeing all things clean on way back together.

    Woohoo haven't done a rebuild in years.

    Posted via the PriusChat mobile app.
     
    #22 Raphael Muscarelle, Oct 6, 2019
  3. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    I'll turn the wrench myself.
    Posted via the PriusChat mobile app.
     
    #23 Raphael Muscarelle, Oct 6, 2019
  4. Inspector858

    Inspector858 New Member

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    Unfortunate for these cars. The days of Toyota reliability vs corporate dollars are what surely brought Toyota to BMW. Goid luck with the rebuild. My 2011 started knocking then dealer said HG. Coolant in cyc 1 and 2. What a shame.
     
    #24 Inspector858, Oct 6, 2019
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  5. bisco

    bisco cookie crumbler

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    all the best!(y)
     
    #25 bisco, Oct 6, 2019
  6. Mendel Leisk

    Mendel Leisk Senior Member

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    Again, it's pretty much the norm, though hardly good, to see a bit of a swamp below the throttle body, unless you have an Oil Catch Can installed.

    The Toyota Technical Service Bulletins for excessive oil consumption, have some info on piston/ring rebuild:
     

    Attached Files:

    #26 Mendel Leisk, Oct 6, 2019
  7. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    Hardly good indeed.

    I do know someone who is useing 1 qt every 1k miles due to rings.

    I'm still not sure what's wrong but going ahead with ring job.

    Will be cleaning EGR and installing new injectors and ignition coils.
    Posted via the PriusChat mobile app.
     
    #27 Raphael Muscarelle, Oct 6, 2019
  8. Mendel Leisk

    Mendel Leisk Senior Member

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    If you feel up to it, sart a thread if/when you do.
     
    #28 Mendel Leisk, Oct 6, 2019
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  9. ASRDogman

    ASRDogman Senior Member

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    That's the best way to do it. :) Works for me!

     
    #29 ASRDogman, Oct 6, 2019
  10. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    Thanks for PDFs.

    I briefly looked through them and I was planning on doing all that.
    Posted via the PriusChat mobile app.
     
    #30 Raphael Muscarelle, Oct 6, 2019
  11. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    Looking through these it seems that wear on wrist pinbushing might be cause of ring failure.
    I can't seem to find anyone with new wrist pin retainers
    Posted via the PriusChat mobile app.
     
    #31 Raphael Muscarelle, Oct 6, 2019
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  12. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    #32 Raphael Muscarelle, Oct 6, 2019
  13. Mendel Leisk

    Mendel Leisk Senior Member

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    Yeah too I think 60K miles is the cut-off for that TSB?
     
    #33 Mendel Leisk, Oct 6, 2019
  14. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    Ok thoroughly confused on what tools needed to take crankshaft main caps and connecting rods off.

    Document says SST 09205-16011 ah yeah put that in Google you get images of a socket yeah cool go to site it's male 12pt torx.

    I know my head bolts are recessed torx.

    Posted via the PriusChat mobile app.
     
    #34 Raphael Muscarelle, Oct 7, 2019
    Last edited: Oct 7, 2019
  15. Mendel Leisk

    Mendel Leisk Senior Member

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    #35 Mendel Leisk, Oct 7, 2019
  16. mjoo

    mjoo Senior Member

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    How does damage to a wrist pin bushing cause damage to the rings? Does the piston get stuck at a bad angle? There are oil sprayers throwing oil on the bottoms of the piston - wouldn't that prevent a wrist pin seizure?

    Pixel XL ?
     
    #36 mjoo, Oct 7, 2019
  17. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    The wrist pin keeps the Piston from improper twisting during combustion. Improper twisting puts improper pressure onto the rings leading to ring and possible cylinder wear. Thus increased blowbye and oil leakage past the oil rings which then makes the compression rings even less efficient.

    Posted via the PriusChat mobile app.
     
    #37 Raphael Muscarelle, Oct 7, 2019
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  18. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    In the fix they replace the Piston. I would assume it has at least a slightly different shape more conducive to put even pressure on the wrist pin and bushing.
    Posted via the PriusChat mobile app.
     
    #38 Raphael Muscarelle, Oct 7, 2019
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  19. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    See what I mean here is images of top of head bolt and another of the connecting rods on his rebuild. One is male one is female. Screenshot_20191007-113103__01.jpeg Screenshot_20191007-113121__01.jpeg

    Posted via the PriusChat mobile app.
     
    #39 Raphael Muscarelle, Oct 7, 2019
  20. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    I'm gonna go with 12 point 12mm female socket. Most likely will be correct. I did send the other post asking. Screenshot_20191007-121530.jpeg

    Posted via the PriusChat mobile app.
     
    #40 Raphael Muscarelle, Oct 7, 2019
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