Strange sound like fluid whooshing

[Grant makin]

Hi all

I own 2020 fiesta st-3.

when idling I can hear fluid swooshing like noise down beside me.
Is this normal? I’m guessing it’s the fuel like but makes a very strange noise

thanks in advance

 

[XR650R]

Doesn't seem normal, no.

 

[Grant makin]

Any ideas

I guess the fuel line runs in the door seal.

 

[M-Sport fan]

...or you have super-human, 10x more acute than a canine's hearing

 

[XR650R]

The fluid might be what's running through your heater core. Maybe there are some bubbles in the line?

 

[Intuit]

Does the noise cease when turning vehicle off?

Noise persist with engine off, blower on?

Running the compressor for either A/C or defrost?
Does the noise change based on engine RPM at a standstill?
Does the noise change based on wind or vehicle speed; when coasting in neutral, engine on?