I am wondering if anybody else here has noticed a vibration hum when the engine runs just above 1500 rpm. The noise disappears after around 1550 rpm. I have seen a post in another forum indicating that this was caused by fuel line vibrating against the frame. Fuel line vibration will possibly cause foam bubbles to form in the fuel besides the annoying noise.

I am expecting another TSB or maybe recall if this is a widespread problem.

 

Wow, whoever discovered that should start writing scripts for CSI