Rough Missfire, Black smoke ... Testing Fuel Pump ?

wahooooman · 05-28-2019, 03:12 PM

Hey All,

Looking for some advice as the car has not thrown any codes.

Heres the situation, car started to hiccup a bit then bam no power black smoke coming out of the rear, shaking im pretty sure it stalled out at that time also. but I was in some traffic so i got it started back up and limped off the road.
I thought it was due to my meth tank running out but i realized I wasnt WOT. even in the stock map it continued to happen over 3k RPM when getting into boost.

Im starting to think its a fuel pump related issue as it seems my car has been slow to start lately but I also only drive it once or twice a week.

Any way to check the Health of the LPFP or HPFP ? Would it be evident in a log ?. Or just looking at AFRs

Thanks!

Mods: Jb4, BEF,XHP TFlash, CP,DP, Intercooler, intake and Meth

TakoMako · 07-09-2019, 10:09 AM

So what really happened?

amw896 · 07-09-2019, 01:15 PM

Black smoke means your running rich I believe. Check to see if your fuel injectors are stuck open and don't drive it!

05-28-2019, 03:12 PM	#1
wahooooman Lieutenant 65 Rep 507 Posts Drives: 2010 Atlantis M3 Join Date: May 2011 Location: NORTH SHORE Ma iTrader: (4)	Rough Missfire, Black smoke ... Testing Fuel Pump ? Hey All, Looking for some advice as the car has not thrown any codes. Heres the situation, car started to hiccup a bit then bam no power black smoke coming out of the rear, shaking im pretty sure it stalled out at that time also. but I was in some traffic so i got it started back up and limped off the road. I thought it was due to my meth tank running out but i realized I wasnt WOT. even in the stock map it continued to happen over 3k RPM when getting into boost. Im starting to think its a fuel pump related issue as it seems my car has been slow to start lately but I also only drive it once or twice a week. Any way to check the Health of the LPFP or HPFP ? Would it be evident in a log ?. Or just looking at AFRs Thanks! Mods: Jb4, BEF,XHP TFlash, CP,DP, Intercooler, intake and Meth __________________ 07 e90 335xi- Sold, 09 X5- Sold, 12 e92 335 xdrive - Sold 11 e92 M3- Sold, 15 M235-Sold,07 e90 335xi (current daily), 10 Atlantis e92 M3 (current) Way to many mods to list
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07-09-2019, 10:09 AM	#2
TakoMako Private First Class 60 Rep 192 Posts Drives: M240i Xdrive Join Date: Nov 2016 Location: Canada iTrader: (0)	So what really happened?
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07-09-2019, 01:15 PM	#3
amw896 Major 583 Rep 1,117 Posts Drives: 2015 BMW M235i Join Date: Feb 2016 Location: ontario iTrader: (0) Garage List 2015 BMW M235i [10.00]	Black smoke means your running rich I believe. Check to see if your fuel injectors are stuck open and don't drive it!
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