Fitted new cambelt but really paranoid after last one slipped, tensioned it all up and it all seems fine. Had car idling with no cambelt cover on but then when revving it there seems to be a whining noise coming from the cambelt end of the engine that gets louder the higher you rev it. Don't know if its always done and I can just here it now because there is no cover on yet but its a little worrying. Any ideas anyone?
BTW water pump, tensioners and rollers are all only a month old.