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A seized engine is usually very obvious. The starter cannot turn the engine at all.

Of course, you do need to first eliminate the possibility that the starter motor has failed and the engine is undamaged.

The main resistance to the starter motor is compression, so you should remove all spark plugs, so there can be no compression, and the engine will normally then turn over very easily. If it still does not turn over using the starter then it is probably seized.

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13y ago

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