Hi all. Started up my c43 today and noticed a ticking sound coming from the engine bay,had a look under the hood and it seems to be coming from the front left side around the ABS pump assembly. The sound is not like ticking you get from noisy tappets more like when you testing a spark plug to see if its firing or not. Anyone had any experience of this or know what it could possibly be, also the car is slightly hunting at idle,this has been going on for a couple of months,its not much but its noticeable,probably a fluctuation of 50-100rpm. Have only serviced it in November,oil,air filters,spark plugs. Could it possibly be the coil packs or leads for the fluctuation. any help would be much appreciated. Thanks in advance.