How does worn camshaft effect the engine operation?

A worn camshaft can significantly impact engine operation by causing improper valve timing and reduced lift, leading to decreased engine performance, rough idling, and poor fuel efficiency. This wear may result in valves not fully opening or closing, which can affect airflow and combustion efficiency. Additionally, it can lead to increased engine noise and potential damage to other components over time if not addressed. Overall, a worn camshaft can compromise engine reliability and longevity.