How do you fix rough idling in 1997 Mazda 1.5?

To fix rough idling in a 1997 Mazda 1.5, first check and replace the spark plugs and ignition wires if they are worn. Inspect the air intake system for any leaks or blockages, and clean the throttle body to ensure proper airflow. Additionally, examine the fuel system for clogged fuel filters or failing fuel injectors. If the problem persists, consider checking the idle air control valve and the engine's vacuum lines for any issues.