2018 Mazda3 whirring noise at idle and mechanical responsive feel (pedal)

[m3hatchguy]

Hi,

I hear some noise when idling which I haven't been able to find on this or other forums (its not as dramatic as other posts here so IM starting to think its normal?).

My guess is this is the fuel injectors im hearing?

Also, I noticed when I get to 40mph (or around that number) I feel the pedal respond in kind. Its hard to describe but Ill explain it like this, lightly increasing speed i dont feel any response but once it gets to around 40mph my pedal has a mechanical feel to it. In addition, when accelerating on the highway (50MPH+) I hear a slight whirring noise (but I think thats normal given my engine is working harder to accommodate the speed.

Would any owners confirm if this is all normal to them?

Just to clarify this vehicle has 72,000 miles

 

[Lazy2.5]

Upload a video of the engine idling with the engine bay open.

 

[m3hatchguy]

Upload a video of the engine idling with the engine bay open.

Thanks for your response. I recorded this before but not at the same time. Should I record engine bay when I hear the whirring noise?

On the cold start:
(center-right side of the engine)

(left side by the belt)

After driving it for a couple hours:

 

[Lazy2.5]

Your engine sounds perfectly normal. All the same sounds mine has been making at.. Almost 3x your mileage... Not to worry.

Is that oil on your alternator there?

 

[m3hatchguy]

Your engine sounds perfectly normal. All the same sounds mine has been making at.. Almost 3x your mileage... Not to worry.

Is that oil on your alternator there?

Im not really sure what oil you see? I thought the blue stuff was odd too but I saw another video on YouTube of a gentleman opening his engine bay and it also showed the blue spots.

I know the engine sounds normal but the sounds I hear from driver-side are what spook me, I haven't been able to find any information about it from other owners :\