Buick Encore rough idle and power loss issue, sometimes stalls on Buick Encore

Some Buick Encore owners report experiencing rough idle, power loss, and occasional stalling due to several common issues. These problems may stem from vacuum leaks and ignition coil failures, which can lead to an unstable idle. Additionally, excess air in the system and a faulty throttle body are known to contribute to rough idling and decreased engine output in the 1.4 gas engine. Fuel system problems, including irregular fuel quantity and timing, can also result in stalling. Early model years from 2013 to 2017 may face cooling system issues, such as coolant leaks and overheating. Owners often find diagnosing rough idling challenging, especially when no trouble codes are present, necessitating checks for vacuum leaks, throttle body cleanliness, spark plug condition, and fuel pressure. It is recommended that owners consult a professional mechanic for accurate diagnosis and resolution of these issues to ensure optimal vehicle performance.