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      09-23-2017, 10:05 AM   #18
dsc888
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Drives: 2017 340ix ///M Sport
Join Date: May 2016
Location: Boston, MA

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Quote:
Originally Posted by KGB_123_99 View Post
I raised my car on jack stands yesterday and got under it to figure out where it is coming from. I thought it might be the exhaust hitting the gas tank but I can move the latter freely and it doesn?t touch anything.

I took a screwdriver, put it on the gas tank and on my ear. It really sounds like it is coming from inside the tank! Could it be the fuel pump???

I also notice that there is no noise even when the tank is empty when the car is cold. It needs to run for a while before the sound appears.
Interesting. Were you able to feel the vibrations on the tank when you were underneath with your hands?
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