Should I be worried about this sound?

[hockenheim]

98 2.5 L with about 173,000 miles on the engine. IMS bearing replaced about 25,000 miles ago although the original turned out to be perfect. Cam deviation was measured less than 1000 miles ago plus and -3°.

After some hard driving today I noticed this ticking sound coming from the right hand side of the engine which I have not previously noticed. It seems to vary with engine rpm

No check engine light is on.

I appreciate any insights.

https://youtu.be/dWdpQ2BGaTI

[blue62]

Originally Posted by hockenheim

98 2.5 L with about 173,000 miles on the engine. IMS bearing replaced about 25,000 miles ago although the original turned out to be perfect. Cam deviation was measured less than 1000 miles ago plus and -3°.

After some hard driving today I noticed this ticking sound coming from the right hand side of the engine which I have not previously noticed. It seems to vary with engine rpm

No check engine light is on.

I appreciate any insights.

https://youtu.be/dWdpQ2BGaTI

Hard to tell from a video.
But it sounds like a lifter to me.