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Old 01-26-2013, 10:20 AM   #5
4th Gear Member
Join Date: Feb 2010
Location: GTA
Posts: 676
That buzzing sound is an indicator that your fuel pump is working. If there are times that you don't hear that buzzing, and you clearly indicated that it won't start when you don't hear it, then i think it may be your fuel pump as well. Either that or some kind of bad connection leading to the pump?
BMW...Now you're playing with power.
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