What is engine surging?

Engine surging is a condition where the engine speed fluctuates up and down continuously. This can be experienced as a surging or a hesitation in the power of the engine. Surging can be caused by mechanical or electrical problems in the engine, such as a dirty fuel system, a faulty ignition system, or a malfunctioning oxygen sensor. Other factors that can contribute to surging include low fuel pressure, a clogged air filter, or a vacuum leak. Surging can be frustrating and dangerous, as it can cause sudden acceleration or deceleration of the vehicle. It's important to have surging issues diagnosed and repaired by a qualified mechanic as soon as possible to prevent further damage to the engine or other components of the vehicle.