I viewed 2 Mazda 6's (2nd gen, 2L Petrol, TS) today for the first time, Now I really want to buy one.
I noticed on both cars (around 50-60k miles) the engine had a noticeable weird sound when the cover is taken off. Very loud ticking/clicking like noise coming from the top of the engine. Constantly even when idle.
Is this normal? I've looked up that it could be the hydraulic valve lifter? or something and it seems like a very expensive job to be done?
Or could it be something else? HELP!
Edit: I've also just found that apparently because it's direct-injection it's normal? True ?

 

Can you take a recording of it?

 

Hello,
I can't get a recording as the vehicles are about 2hours way, although I found this which sounds very similar? happens on top of the engine ?
Thanks