Tag: change half spark plugs

Is It OK to Change Only Some Spark Plugs? What Mechanics Really Say

Is It OK to Change Only Some Spark Plugs? What Mechanics Really Say

Dec 28 2025 / Ignition Parts

Replacing only some spark plugs may seem like a cost-saving trick, but it risks engine damage, poor fuel economy, and costly repairs. Mechanics recommend replacing all spark plugs at once for smooth performance and long-term savings.

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