Engine Clicking

[bahamutangel]

2006 Mazda3
So, I don't know how long my car has been making this noise, but I was driving withthe windows down the other day and realized my engine is making a clicking sound. Not very loud, but increases with RPM and does not happen at al during idle.

Car runs fine, shifts fine, should I be concerned? Like I said, I only noticed it because the windows were down and the radio was off. It's definitely in the engine compartment.

Thanks!

 

[mjstew]

probably the timing chain...mazdas dont use a traditional timing belt, instead they use a steel link timing chain...they can be a little noisier than regular timing belts, but almost never have to be replaced