Some Dodge Dart owners report experiencing a rough idle after changing spark plugs, which may be attributed to improper installation of the plugs. This issue can arise if the spark plugs are not correctly fitted, leading to malfunction. Additionally, some owners find that faulty spark plugs can contribute to the rough idle condition. Problems with related components, such as ignition coils or fuel injectors, may also be responsible for the rough idle following a spark plug change. Furthermore, other potential causes, including misfiring due to air, fuel, or spark issues, can exacerbate the situation. It is advisable for owners facing this issue to inspect the spark plug installation, check for faulty plugs, and examine related components. If the rough idle persists, consulting a mechanic or automotive expert for further diagnosis may be necessary.
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