I have noticed a strange humming sound from the engine compartment during idling. Two days ago I had to work the starter for a few minutes to get the car started, which I think was due to moving the car a few feet two days prior and then stopping the engine. The humming noise was noticed after this incident of prolonged starting attempt. Any clues what might be causing this humming sound. During driving it is not perceptible but only during idling. Any advice gratefully received.
Jazz 2016 petrol manual 1318cc.
many thanks
jac
tried to attach a sound file but not allowing.