Anonymous asked in SportsRunning · 3 months ago

Attempting to start an engine that is already running may result in ....what?

5 Answers

  • .
    Lv 7
    3 months ago


    Please move your question to Cars & Transportation>Maintenance & Repairs, as it does not belong in Sports>Running. Thanks!

  • 3 months ago

    When you start the engine, a small gear, known as a pinion, is pushed along the starter's shaft to the flywheel. Teeth on pinion engage teeth on a gear around the flywheel. The starter motor turns the pinion, the pinion turns the flywheel, which turns the engine.

    But, if the engine is already running when the starter is engaged, the teeth on the flywheel and pinion won't mesh. They will collide or grind against each other. That sometimes can break teeth on the pinion, flywheel, or both.

  • 3 months ago

    You can actually break teeth on the flywheel and break the teeth on the starter. Most of the time it doesn't but if you get unlucky it can sure do it

  • JonZ
    Lv 7
    3 months ago

    Total humiliation and loss of any street cred!

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  • Rick
    Lv 4
    3 months ago

    tearing-up the starter AND the fly wheel ..............................

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