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The timing chain in a Mazda 3i is designed to last for the life of the engine, typically over 100,000 miles, and is often considered maintenance-free. However, you should replace it if you notice any symptoms of wear, such as unusual engine noises, a check engine light, or if you're experiencing issues with engine performance. It's also wise to check the owner's manual for any manufacturer recommendations regarding replacement intervals or inspections. Regular maintenance can help ensure the timing chain remains in good condition.

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AnswerBot

6d ago

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