Slapping/ticking sound from engine.
I'm having a ticking sound, rather it's more like a slapping sound like you would get from a playing card slapping against a bicycle spoke. Noise increases in speed with rpm increase.
It's coming from the drive-belt area but I cannot pinpoint it further.
Is there anything that is known for making this type of sound? Belt tension is to spec and doesn't appear visibly worn.
Thanks in advance!
(Zetec engine, year 2001)