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Engine rattle on startup

Discussion in 'Prius v Main Forum' started by Led, Nov 22, 2023.

  1. Led

    Led Junior Member

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    So what does the dreaded head gasket startup rattle sound like. My 2012 V just yesterday started to make a, well, it sounds like something hitting something in the engine bay. It only rattles for a second or two and clears up. Any ideas other than head gasket? So far I have noticed NO coolant usage.
     
    #1 Led, Nov 22, 2023
  2. bisco

    bisco cookie crumbler

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    there are other misfiring causes, how many miles on her?
     
    #2 bisco, Nov 22, 2023
  3. Led

    Led Junior Member

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    177K. No codes and it drives fine. This just started yesterday. Was hoping to get 200k before swapping in a 4th gen engine.
     
    #3 Led, Nov 22, 2023
    bisco likes this.
  4. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    EGR and intake manifold ever cleaned?
     
    #4 Mendel Leisk, Nov 22, 2023
  5. rjparker

    rjparker Tu Humilde Sirviente

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    No coolant loss is normal at first. Misfires caused by plugs, coils or injectors won’t clear up so fast. Borescope inspection is definitive but start thinking about your repair options soon. Since you want to change engines, a hole in the block will only speed up the process.


    Shudder video
     
    #5 rjparker, Nov 22, 2023
    Last edited: Nov 22, 2023
    Tim Jones likes this.
  6. Led

    Led Junior Member

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    I checked EGR last year when I got it. It was in decent shape but not perfect. I think I’ll just drive it until it pops or sell it. I just today got an 2013 Audi S4 6 speed manual from an old friend.
     
    #6 Led, Nov 22, 2023
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  7. Led

    Led Junior Member

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    Just watched the video posted. That’s the noise, just doesn’t last that long. Anyone want an otherwise good condition 2012 for a cheap price? Toyota did the rectifier and brake booster under warranty last year.
     
    #7 Led, Nov 22, 2023
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  8. Tim Jones

    Tim Jones Senior Member

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    HG for sure.........................
     
    #8 Tim Jones, Nov 25, 2023
  9. John March

    John March Junior Member

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    My head gasket leak was barely noticeable in the coolant level at first. It wasn't getting into the oil. Eventually, symptoms got worse and coolant leak was noticeable. Good Luck.
     
    #9 John March, Nov 27, 2023
  10. Tim Jones

    Tim Jones Senior Member

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    I have never hear of coolant in the oil on a Gen 3 HG failure. Just rattle and loss of coolant and of course over heating when bad... but have seen holes in the block, bent rods and deflated pistons if you let it go to long...

    Only car I've ever had with a blown HG and i'm in my late 60's.
    These cars are junk aft6er 150,000 miles.......you lose all gas savings on repairs..... and a very good chance you'll be stranded
     
    #10 Tim Jones, Nov 27, 2023
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