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      07-20-2010, 11:25 AM   #45
tranquility
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Drives: 2011 Z4 sDrive 35i
Join Date: Aug 2007
Location: Montréal

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Ok, so I took it in the other day and despite a whole day road test(!) they couldn't figure out where the noise came from! Arrgh. I don't understand. I didn't want them to drive it anymore so I took it back and the noise still comes on and off at idle, the std 'humming/woo' slight noise.

What I did notice, it seems, is if I'm coming to a stop and I suddenly stomp on the brakes w/ more force (watch out for rear traffic if you want to try this!) it seems there is a soft 'thunk' noise like something is loose in the back, near fuel tank area? Also, the 'humming/woo' noise seems to get cut off for a few seconds...could it be the fuel sloshing around and drowning the pump and ending the noise, albeit for just a few seconds?

Anyways, I will definitely bring it back for checking after my 2,000 break-in but would like to know your views on my above. Thx!
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