Car wont start after filling up gas

Mizh · 09-19-2018, 01:24 PM

The first time this happened I was close to empty and I thought maybe the fuel wasn't getting to the engine. Now I fill my tank up at half way to empty and the same problem will still occur. I always use 91 octane.

After I fill the car up to full, the engine attempts to turn but fails to start up. I usually have to try about 5-6 times before it finally starts up.

2010 convertible 328i is what I drive.

NoGuru · 09-19-2018, 02:18 PM

Can you pull error codes from the ECU?
Sounds like maybe a failing LPFP.

Mizh · 09-20-2018, 11:48 AM

Not yet
Usually do start it ill have one foot on the brake to turn on the ignition and then another foot gently pumping the gas pedal to feed fuel through until it becomes stable (automatic transmission)

Emilime75 · 09-20-2018, 11:51 AM

Sounds more like the EVAP sysyem, maybe.

09-19-2018, 01:24 PM	#1
Mizh Private 11 Rep 81 Posts Drives: 2011 335i M Sport Join Date: Aug 2018 Location: Midwest iTrader: (0)	Car wont start after filling up gas The first time this happened I was close to empty and I thought maybe the fuel wasn't getting to the engine. Now I fill my tank up at half way to empty and the same problem will still occur. I always use 91 octane. After I fill the car up to full, the engine attempts to turn but fails to start up. I usually have to try about 5-6 times before it finally starts up. 2010 convertible 328i is what I drive. __________________ Here to learn!
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09-19-2018, 02:18 PM	#2
NoGuru Major 772 Rep 1,418 Posts Drives: 335is Join Date: Apr 2017 Location: MI iTrader: (0) Garage List 2021 Chevy Silverad ... [0.00] 2002 Jeep Cherokee [0.00] 2014 CTS [0.00] 2011 335is [0.00]	Can you pull error codes from the ECU? Sounds like maybe a failing LPFP. __________________ 2011 335is DCT BQ Tuning / BMS CAI / VRSF kittyless DP's / Synapse BOV and charge pipe / 7" VRSF Race FMIC / Walbro 535 and 450 on BMP4 / E90 tune / Diff Brace / PR Coils / Relocation Inlets / DAW Stage3+ Turbos / MMP port injection / xHP Stage 3 / FPR and -6 fuel lines
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09-20-2018, 11:48 AM	#3
Mizh Private 11 Rep 81 Posts Drives: 2011 335i M Sport Join Date: Aug 2018 Location: Midwest iTrader: (0)	Not yet Usually do start it ill have one foot on the brake to turn on the ignition and then another foot gently pumping the gas pedal to feed fuel through until it becomes stable (automatic transmission) __________________ Here to learn!
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09-20-2018, 11:51 AM	#4
Emilime75 Colonel 1209 Rep 2,476 Posts Drives: 2010 335i E92 LeMans Blue Join Date: Dec 2017 Location: Merica! iTrader: (1)	Sounds more like the EVAP sysyem, maybe.
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