Weird chirping/ pinging noise
Hey all, I have a 2011 Mazda 2 with 138xxx miles on it. Around a 100 miles ago I noticed this weird chirping/ ringing noise coming from the passenger side of the engine bay. In the video I added with this post you can somewhat hear it. It’s hard to get a good video of it because it only happens when the engine is warmed up and accelerating. It happens in every gear when accelerating but not idling. If it’s engine breaking it doesn’t make the noise. Any advice or idea of why this may be happening?
Sound comes from near firewall (ish) passenger side of engine bay.
Work done to car:
Upper motor mount replaced (100,000 miles)
Lower polyurethane dog bone motor mount (100,000 miles)
Don’t know when serpentine belt has been changed but probably at 75,000 miles.
Thanks!
Edit: you can hear the sound at 3 seconds and at 8 seconds.