causes of blown head gasket?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Psl2013, Jun 26, 2017.

  1. Psl2013

    Psl2013 New Member

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    head gasket
     
  2. Sam Spade

    Sam Spade Senior Member

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    Where is Psl......and what is your question really ??

    In most cases, it is impossible to tell exactly what caused a part to fail.......including head gaskets.
    Sometimes an episode of overheating causes the heads to warp.
     
  3. bisco

    bisco cookie crumbler

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    factory defect
     
  4. danlatu

    danlatu Senior Member

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    Engine knock, too high compression, running rich, running lean, dirty injector, bad plugs, bad water pump. Has your engine had a rough idle/knocking?
     
  5. Mendel Leisk

    Mendel Leisk Sidewalk Supervisor

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    What's the root cause of high compression, carboned-up cylinder heads? Which in turn gets back to the PCV and EGR? Ditto for dirty injectors? And rich/lean?

    I'm starting to hate those two acronyms...
     
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  6. Kenny94945

    Kenny94945 Active Member

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    I'll write that most blown head gaskets occur from overheating....eg driving with low or no coolant or failed water pump.
    Yes, high compression will blow a head gasket.
    In a Prius, I am not so sure excess carbon build up causing excess compression would do this, yet these cars have many of their system interwoven mechanically .

    Also, loosened (or incorrectly torqued) head bolts over time.
    Broken head bolt (can also occur from corrosion).
    Failure of the gasket near the coolant journals.
    So, a warped head being a root issue or a failed gasket....yet what caused those issues? That's the question.

    Once the head is removed I bet you'll have some leads to probably ascertain the answer.

    Let us know your findings.

    Good luck.
     
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