Question

final exam
you must score at least 80% to earn your certificate of completion. a failing score will result in course failure and forfeiture of your course fee—no refunds will be issued.

why is it important to replace worn - out spark plugs and air filters during a tune - up?
○ to make your tires last longer
○ to change the color of your exhaust
○ to improve engine performance and prevent breakdowns

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Explanation:

Worn spark plugs hinder proper fuel ignition, reducing engine efficiency. Clogged air filters restrict airflow, disrupting fuel-air mixture balance. Replacing both optimizes combustion, boosting performance and avoiding mechanical issues from poor engine operation.

Answer:

To improve engine performance and prevent breakdowns