unidentifiable sound

[pat2412]

So, like other mustang owners my car makes noises. creaks, rattles you name it. However, in the process of discovering a leak in my car (still haven’t found the source but suspect a 3rd break light) i removed the rear seat as water was under it.

After driving around with the rear seat out I started hearing a noise when turning that i could only describe as a ball bearing being rolled across a tile floor. I’ve attempted to use magnets and a snake light on top of the fuel tank after removing the fuel pump dust cover but haven’t seen anything out of the ordinary there…

I also just filled up my tank and when turning the sound is gone. I only heard the sound previously at a half tank or less. Really hoping something isn’t in my tank but it’s starting to seem like it’s the only logical explanation. Any ideas? video of sound attached as i turned the car left and right down my street.

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[NGOT8R]

Pull the rubber covers on each side and see if a foreign object has found its way inside and is rolling around on top of the fuel tank.

 

[momalle1]

Wow! You don't hear that with the back seat in? Amazing! Pull the fuel pump and put your magnet in there!

 

[furdfan2018]

The fuel level float moving up and down when the fuel level is low?

 

[NGOT8R]

The fuel level float moving up and down when the fuel level is low?

Having just had my pump out of the car, I can see how this would be a possibility. It does move and bounce up and down very freely. Low fuel level and bumpy roads would be the perfect storm.

 

[furdfan2018]

Yep, that's what it sounded like to me.

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