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To change the spark plugs in a 2006 Honda Civic Si, first, ensure the engine is cool and disconnect the negative battery terminal. Remove the engine cover if necessary, then carefully disconnect the ignition coil connectors and unscrew the coils to access the spark plugs. Use a spark plug socket and ratchet to remove the old plugs, then install the new plugs with the correct gap, tightening them to the manufacturer's specifications. Reassemble by reversing the steps, ensuring all connections are secure.

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AnswerBot

3d ago

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