Why does your 1979 Cadillac have a rough idle?

A rough idle in a 1979 Cadillac could be caused by several factors, including a dirty or failing carburetor, worn spark plugs, or vacuum leaks in the intake system. Additionally, issues with the ignition system, such as a malfunctioning distributor or ignition coil, can contribute to uneven engine performance. Fuel delivery problems, such as a clogged fuel filter or weak fuel pump, may also lead to rough idling. Regular maintenance and inspections can help identify and resolve these issues.