BMW M3 Forum (E90 E92) - View Single Post - For New Owners - What I wish I knew when I first bought my E9X M3:

CHE///MIST3 · 07-12-2019, 01:58 PM

If your idle hesitates/stumbles at a stop, but runs smoothly past 600-700 rpms, have a look at your gas cap, it may be so old that the rubber seal has compressed beyond its ability to seal properly and you have, in essence, an open gas cap...which this car HATES. Get a new cap at your local BMW dealer for $32....that fixed the problem for me!

GM

07-12-2019, 01:58 PM	#143
CHE///MIST3 Captain 371 Rep 615 Posts Drives: E92 M3 6MT Space/Black Join Date: Mar 2015 Location: Houston, TX iTrader: (6) Garage List 2009 BMW M3 [0.00] 2007 BMW 328i [0.00]	If your idle hesitates/stumbles at a stop, but runs smoothly past 600-700 rpms, have a look at your gas cap, it may be so old that the rubber seal has compressed beyond its ability to seal properly and you have, in essence, an open gas cap...which this car HATES. Get a new cap at your local BMW dealer for $32....that fixed the problem for me! GM
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