Rick's Free Auto Repair Advice

Starter grinds when turning the key

Starter grinds when turning the key

Starter makes grinding noise

If you hear a metal-to-metal grinding noise when trying to start your engine, chances are you’ve got missing teeth on the flywheel or broken/worn teeth on the starter motor drive gear. This damage happens if you try to start an already running engine.

Trying to start an already running engine forces the starter drive gear into the spinning teeth of the flywheel, which is turning much faster than the starter motor. As the starter drive gear touches the flywheel, the teeth clash and some flywheel teeth break off, chip or wear. Here’s what the grinding sounds like:

Broken, worn and missing flywheel teeth

broken missing flywheel teeth


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Posted on by Rick Muscoplat

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