Discussion » Questions » Transportation » Mechanically speaking, exactly what damage is done when you unintentionally turn on the ignition switch when the engine is already running?

Mechanically speaking, exactly what damage is done when you unintentionally turn on the ignition switch when the engine is already running?

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Posted - July 12, 2021

Responses


  • 16767
    The starter pinion can't turn that fast, so the teeth won't mesh. You can break a tooth on the ring gear if you hold the switch for a long time. The starter pinion is very robust for a reason and almost indestructible.
      July 12, 2021 4:53 PM MDT
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  • 53506

     

      Thank you!
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      July 12, 2021 4:54 PM MDT
    2

  • 44605
    Maybe these days. I had one lose teeth on my 65 Plymouth starter and I never made the mistake that Randy asked about.
      July 13, 2021 12:13 PM MDT
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  • 16767
    Metal fatigue? Or corrosion?  I've heard of stripping teeth off the ring gear, but never off the starter itself.
      July 13, 2021 10:21 PM MDT
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  • 44605
    Oops...you are probably correct. I never repaired it.
      July 14, 2021 10:05 AM MDT
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  • 581
    You make yourself look stupid for doing it.
      July 12, 2021 5:23 PM MDT
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  • 17593
    Your husband yells at you.
      July 13, 2021 1:10 AM MDT
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  • 53506

    Lol!

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      July 13, 2021 12:13 PM MDT
    1