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Help: Catastrophic Engine Failure 5.7L V8

Discussion in '2nd Gen Tundras (2007-2013)' started by 4Runner_1986, Feb 26, 2021.

  1. Feb 27, 2021 at 9:34 AM
    #31
    Jbehredt

    Jbehredt Burgeoning member

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    Yep. The 150 mile drive didn’t cause the holes. The person who replaced the knock sensor PROBABLY did.
     
    landphil likes this.
  2. Feb 27, 2021 at 11:06 AM
    #32
    NoRcptn

    NoRcptn Better than mediocre poster

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    ^^^^This is the mechanic we all need. Seriously, good on ya. It's seems far to rare to find someone with true integrity. RESPECT.
     
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  3. Feb 27, 2021 at 11:08 AM
    #33
    JohnLakeman

    JohnLakeman Burning Internet Daylight

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    Hydrostatic lock is actually is not a bad explanation for the OP's damage. I like the theory for explaining that bulging "rupture" crack, i.e. incompressible liquid applies uniform pressure to the cylinder wall until it finally fractures at the weakest point, blowing off the pressure causing the "bulge" just before IT lets go.

    But, a lot of questions would remain unanswered, like when/how was coolant leaked into both rear cylinders, how much leaked in, and how was the engine still able to be started. Maybe if coolant was trapped on top of the intake valves until the engine started.
     
    Last edited: Feb 27, 2021
  4. Feb 27, 2021 at 11:14 AM
    #34
    timsp8

    timsp8 Former Tundra owner for 13 years

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    I agree with this. Need more info. It went from “knock sensor code error thrown for once side, dealer said it was safe to drive vehicle 150 miles home” to dealer is blaming OP. Who did the work? Did the dealer touch the engine?

    A lot of good info in the thread. Hopefully OP comes back.
     
  5. Feb 27, 2021 at 1:11 PM
    #35
    Dalandshark

    Dalandshark Infected with 5G

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    Yes, at first read it sounds like he took it to the dealer and they did the work. Upon second read, it is unclear... and upon seeing the pictures (wouldn’t pull up first time I tried) the engine has already been removed and at that point should be able to finish tearing down to find cause or evidence of why it died.
     
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  6. Feb 27, 2021 at 1:15 PM
    #36
    bleach

    bleach MEME Fiend

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    If he did his own tear down then he's probably SOL. It's the word of OP against the service department.
     
  7. Feb 27, 2021 at 1:27 PM
    #37
    huntertn

    huntertn New Member

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    In situations like this it is best to video the complete tear down. Or, have a witness for all parties present. Or, have an independent impartial party do it.

    It is odd that it grenaded on startup after the work was done.
     
  8. Feb 27, 2021 at 9:13 PM
    #38
    FWD Tundra

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    This is my thought also. Liquid lock. The cylinders probably were not full with water which allows the piston to move then when it tries to compress the liquid that is when the damage is done right away with bends, cracks and fatigue. The starter has a lot of torque and usually bends and cracks things up at first then when it starts it goes KA BOOM. Liquid lock being either water or oil is unforgiving, you can't compress it at all and leaves a big mess in the end. And that leaves as JohnLakeman says "lots of questions". Both rear cylinders? I dought the mech was lucky enough to drop one each thing down each of the intakes for the rear cylinders. If he/she did this I think I would give up being a mechanic.
     
  9. Feb 28, 2021 at 3:17 AM
    #39
    MT Madman

    MT Madman Just an ordinary guy

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    I understand that but I still find it hard to believe, I can't remember how many times I've touch the hot side of my battery and didn't feel a thing. Besides that sensor wouldn't have any power applied without the vehicle running and it's probably a direct feed from the ECM and probably closer to 5VDC. Either 12 or 5 I doubt there's more than a couple milliamps running along there.

    DC resistance is the reason Edison lost out to Tesla in making AC 'the' household current.
     
  10. Feb 28, 2021 at 5:49 AM
    #40
    Half Assed

    Half Assed me ne frego

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    1 post from OP, figures. :bored:

    Who replaced the knock sensors? It is unclear in your first post.
     
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  11. Feb 28, 2021 at 5:55 AM
    #41
    Black Wolf

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    I was very skeptical at first and still am.
     
  12. Feb 28, 2021 at 7:25 AM
    #42
    timsp8

    timsp8 Former Tundra owner for 13 years

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    She joined Fri but was last seen last night (Sat) at 8:26 pm. So she has been on since the original post.
     
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  13. Feb 28, 2021 at 7:52 AM
    #43
    Black Wolf

    Black Wolf Bigfoot Hunter, Sasquatch too, but not Yeti

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    True, but being seen is not being heard. Would be nice to have more input on this thread though.
     
  14. Feb 28, 2021 at 8:36 AM
    #44
    BTBAKER

    BTBAKER DIFFERENT NAME. SAME JUNK.

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  15. Feb 28, 2021 at 8:42 AM
    #45
    Professional Hand Model

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    You guys caught a download virus if you clicked on that file. :rofl:
     
  16. Feb 28, 2021 at 9:07 AM
    #46
    bleach

    bleach MEME Fiend

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  17. Feb 28, 2021 at 9:09 AM
    #47
    FirstGenVol

    FirstGenVol More Shifty than Shifty

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    Why don't we give the OP a little while to respond before immediately assuming he/she is lying. This wouldn't be the first time someone on this forum has had their 5.7L die.
     
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  18. Feb 28, 2021 at 9:17 AM
    #48
    Black Wolf

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    or ...................................
     
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  19. Feb 28, 2021 at 9:22 AM
    #49
    Professional Hand Model

    Professional Hand Model A.K.A ‘Golden Hands’

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    I’ve never found Truck Forums to be helpful with legal advice.

    Best bet is be nice, yet firm with the Stealer on working out the problem. I’d love to see in writing their response to what happened but we usually only hear one side of the story. Hire a lawyer if you need one and let them do the work to make you whole.
     
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  20. Feb 28, 2021 at 9:44 AM
    #50
    timsp8

    timsp8 Former Tundra owner for 13 years

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    I don’t think anyone said she was lying. Most tried to help. Others just asked for more info or clarification. I just said I hope she comes back to give more details.
     
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  21. Feb 28, 2021 at 9:47 AM
    #51
    Rotaryphoneuser

    Rotaryphoneuser New Member

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    Where did he go? If I ask some serious question like this, I'll be checking in very often.
     
  22. Feb 28, 2021 at 10:00 AM
    #52
    BTBAKER

    BTBAKER DIFFERENT NAME. SAME JUNK.

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    That’s a lot of SPAM!
     
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  23. Feb 28, 2021 at 10:04 AM
    #53
    BTBAKER

    BTBAKER DIFFERENT NAME. SAME JUNK.

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    For the record. I don’t think this is really SPAM. I think the OP probably is searching everywhere for some advice.
    I’m just :stirthepot:
     
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  24. Feb 28, 2021 at 10:58 AM
    #54
    JimboSlice413

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    If you touch only the hot side of an AC or DC circuit you're just a floating conductor. Give the circuit a path by grounding out another part of your body. I dont' want to derail here but I've been curious about how DC might feel. Been hit more than a few times on various AC systems up to 277 in different ways over the last 16 years. It also dependents how the rat got it. In through the finger and out the elbow, not a big deal. In through the finger, passed the heart and out the foot...bigger deal. I can tell you personally, the path through the body is the difference from "ouch" and your mind leaving your body briefly. Its a full system interruption. 12vdc can kill a rat dead in its tracks

    OP's rat problem is plausible but not likely the cause of this damage. It seems dealers go the rodent route frequently when responsibility is in question.
     
    Last edited: Feb 28, 2021
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  25. Feb 28, 2021 at 11:02 AM
    #55
    empty_lord

    empty_lord They see me rollin'

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  26. Feb 28, 2021 at 11:15 AM
    #56
    bleach

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  27. Feb 28, 2021 at 11:30 AM
    #57
    Wynnded

    Wynnded What MPG...

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    It's not the voltage that's as likely to kill you as it is the current. Remember that static electricity can be upwards of 20,000 volts and we run around in our socks zapping each other all the time. As little as 10mA can be painful with as few as 100mA likely lethal.
     
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  28. Feb 28, 2021 at 1:12 PM
    #58
    BTBAKER

    BTBAKER DIFFERENT NAME. SAME JUNK.

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    I work around 135 volt DC regularly and have been hit numerous times. It bothers me more than AC.
     
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  29. Feb 28, 2021 at 1:19 PM
    #59
    Black Wolf

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    I've been zapped with DC a lot over the years. A 1000 DCV once. Sucked for a few minutes. BFD. AC with milliamps is a game changer. DC throws your hand off and can break your arm if you hit something. AC grabs you and kills you with very little current.
     
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  30. Feb 28, 2021 at 1:23 PM
    #60
    JimboSlice413

    JimboSlice413 Super Nice Guy

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    Backup systems?
     

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