Idle stumble after tank fill

Spin_dry · 02-12-2015, 04:08 PM

The 135 has an idle stumble that follows fueling. It typically occurs once or twice. The idle drops to 300 rpm and then return to normal. Doesn't happen at any other time. Anyone have the same issue?

Dackelone · 02-12-2015, 04:46 PM

Don't refuel there anymore!

No really, maybe try a different fuel brand or gas station. ?

mackeroni · 02-14-2015, 05:12 PM

I had a new 1978 VW Rabbit that did the same thing. (Yes, I am that old.) The stumbling was due to a faulty pressure relief valve in a carbon canister through which the pressurized fuel tank was vented. Valve replaced under warranty and no more stumbles. Maybe a clue here?

02-12-2015, 04:08 PM	#1
Spin_dry Private First Class 7 Rep 119 Posts Drives: BMW 135i Join Date: Nov 2014 Location: Wisconsin iTrader: (0)	Idle stumble after tank fill The 135 has an idle stumble that follows fueling. It typically occurs once or twice. The idle drops to 300 rpm and then return to normal. Doesn't happen at any other time. Anyone have the same issue?
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02-12-2015, 04:46 PM	#2
Dackelone European Editor 10539 Rep 22,992 Posts Drives: N54 e82 Join Date: Feb 2010 Location: Bayern, Germany iTrader: (1)	Don't refuel there anymore! No really, maybe try a different fuel brand or gas station. ? __________________ Dackel's European Delivery Museum Guide
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02-14-2015, 05:12 PM	#3
mackeroni Former Opel GT Pilot 327 Rep 771 Posts Drives: 2011 135i, AW, CR, 6MT Join Date: Dec 2010 Location: Canton, OH USA iTrader: (0)	I had a new 1978 VW Rabbit that did the same thing. (Yes, I am that old.) The stumbling was due to a faulty pressure relief valve in a carbon canister through which the pressurized fuel tank was vented. Valve replaced under warranty and no more stumbles. Maybe a clue here? __________________ So, that's it. I am doomed. There is no patch, no methadone, no substitute. Curse you BMW. Curse you and your seamless power delivery. Curse the incredible sense of road feel. Curse the comfort, the luxury, the envious looks from the masses. I am... hopelessly addicted.
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