B58 Misfiring

Jrbeltran · 02-16-2023, 11:04 AM

Been having issues with misfires, replaced all 6 injectors, coil packs are good and on a new set of spark plugs. Still getting misfires on all 6 cylinders. Could this be a bigger problem going on ? Not seeing any smoke when starting other than a really bad idle.
All adaptations were reset with new injectors for they possibly need to be coded and programmed ?

Prak903 · 02-16-2023, 11:30 AM

O2 sensors checked?

Jrbeltran · 02-16-2023, 11:41 AM

Quote:

Originally Posted by Prak903

O2 sensors checked?

o2 sensors have not been checked i will go ahead and check those.
But I haven’t got any code relating to it or any code that im running rich or lean

Prak903 · 02-16-2023, 11:46 AM

Quote:

Originally Posted by Jrbeltran

o2 sensors have not been checked i will go ahead and check those.
But I haven’t got any code relating to it or any code that im running rich or lean

Any codes at all?

Jrbeltran · 02-16-2023, 11:50 AM

Quote:

Originally Posted by Prak903

Any codes at all?

Yeah so these are the codes that came out and now it’s the same codes with every cylinder not quite sure what else to check if all injectors are new.

schernov · 02-16-2023, 02:54 PM

you might need an ISTEP update. See TSB

Jrbeltran · 02-17-2023, 12:05 AM

Quote:

Originally Posted by schernov

you might need an ISTEP update. See TSB

I will go ahead and check this out and see if it helps thank you

Jrbeltran · 02-17-2023, 12:09 AM

update took out new injectors to get the numbers on them to code and program them to the car, ecu didn’t come out on the scanner

im currently running bootmod3 stage 2+ e50 map i am on stock turbo and have the correct bolt ons and running a dorch stage 2 hpfp

im starting to wonder if i have a bad tank of gas as i been running ethanol mix for awhile now maybe flushing with 91 will help this ?

eluded · 02-17-2023, 02:02 AM

Perhaps bad gas. At least you’re seeing the issue across all cylinders so hopefully the motor is healthy.

Jrbeltran · 02-17-2023, 02:06 AM

Quote:

Originally Posted by eluded

Perhaps bad gas. At least you’re seeing the issue across all cylinders so hopefully the motor is healthy.

Im hoping it’s something simple going on misfires are a headache as it can be something so little to something severe.

It’s coming to about almost 3 months of misfiring as parts were back ordered and delayed cause the holidays. I will be draining out the tank tmr i will update you guys.

Jrbeltran · 02-28-2023, 06:11 PM

update !

ended up towing it to a shop they ran a fuel pressure test , compression test and leak down test everything passed and seemed fine. they tested the injectors and saw injector 6 was stuck open so it was faulty( keep in mind all injectors were new) they went ahead and replaced it car ran good no more rough idle no misfires.

next morning car is misfiring again now in cylinder 1 took it back to the shop and now that one is stuck open seems im in a cycle here not sure what is causing them to fail i am on 91 tank of gas currently

AMG KLR · 02-28-2023, 06:25 PM

Im sorry you are going through this man. Was the cylinder damaged from the fuel injector being stuck open?

Wires · 02-28-2023, 07:11 PM

I'd say you got bad gas, or something in the tank.

Dpwhit3 · 03-01-2023, 10:15 AM

Where did you get the injectors from if you don’t mind me asking?

Jrbeltran · 03-01-2023, 01:48 PM

Quote:

Originally Posted by AMG KLR

Im sorry you are going through this man. Was the cylinder damaged from the fuel injector being stuck open?

from the looks of it thankfully the cylinders are not damaged as i let the car sit and never turned it on when it was misfiring

Jrbeltran · 03-01-2023, 01:49 PM

Quote:

Originally Posted by Dpwhit3

Where did you get the injectors from if you don’t mind me asking?

they are oem injectors directly from bmw

Jrbeltran · 03-01-2023, 01:51 PM

Quote:

Originally Posted by Wires

I'd say you got bad gas, or something in the tank.

possibly it could be a bad tank

Tommy D · 03-01-2023, 04:57 PM

https://www.youtube.com/watch?v=QLF1GUyD-Aw

Kern417 just posted a video on Injectors.

02-16-2023, 11:04 AM	#1
Jrbeltran New Member 0 Rep 11 Posts Drives: 2018 bmw 340i Join Date: Feb 2023 Location: california iTrader: (0)	B58 Misfiring Been having issues with misfires, replaced all 6 injectors, coil packs are good and on a new set of spark plugs. Still getting misfires on all 6 cylinders. Could this be a bigger problem going on ? Not seeing any smoke when starting other than a really bad idle. All adaptations were reset with new injectors for they possibly need to be coded and programmed ?
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02-16-2023, 11:30 AM	#2
Prak903 Second Lieutenant 188 Rep 274 Posts Drives: 2018 440i xDrive Gran Coupe Join Date: May 2022 Location: Chicago, IL / Milwaukee, WI iTrader: (0) Garage List 2018 BMW 440i xDriv ... [9.50]	O2 sensors checked?
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02-17-2023, 12:09 AM	#8
Jrbeltran New Member 0 Rep 11 Posts Drives: 2018 bmw 340i Join Date: Feb 2023 Location: california iTrader: (0)	update took out new injectors to get the numbers on them to code and program them to the car, ecu didn’t come out on the scanner im currently running bootmod3 stage 2+ e50 map i am on stock turbo and have the correct bolt ons and running a dorch stage 2 hpfp im starting to wonder if i have a bad tank of gas as i been running ethanol mix for awhile now maybe flushing with 91 will help this ?
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02-17-2023, 02:02 AM	#9
eluded 2JZ-GTE 3045 Rep 3,996 Posts Drives: 340 6MT, 50e, others Join Date: Nov 2015 Location: Sofia iTrader: (0)	Perhaps bad gas. At least you’re seeing the issue across all cylinders so hopefully the motor is healthy. __________________ A man who views the world the same at 50 as he did at 20 has wasted 30 years of his life.
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02-28-2023, 06:11 PM	#11
Jrbeltran New Member 0 Rep 11 Posts Drives: 2018 bmw 340i Join Date: Feb 2023 Location: california iTrader: (0)	update ! ended up towing it to a shop they ran a fuel pressure test , compression test and leak down test everything passed and seemed fine. they tested the injectors and saw injector 6 was stuck open so it was faulty( keep in mind all injectors were new) they went ahead and replaced it car ran good no more rough idle no misfires. next morning car is misfiring again now in cylinder 1 took it back to the shop and now that one is stuck open seems im in a cycle here not sure what is causing them to fail i am on 91 tank of gas currently
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02-28-2023, 06:25 PM	#12
AMG KLR Captain 163 Rep 732 Posts Drives: 2018 440i GC Join Date: Nov 2013 Location: USA iTrader: (0)	Im sorry you are going through this man. Was the cylinder damaged from the fuel injector being stuck open?
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02-28-2023, 07:11 PM	#13
Wires Brigadier General 1646 Rep 4,877 Posts Drives: 2016 340i xDrive Join Date: Apr 2008 Location: Calgary iTrader: (0)	I'd say you got bad gas, or something in the tank.
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03-01-2023, 10:15 AM	#14
Dpwhit3 New Member 3 Rep 23 Posts Drives: BMW 440i Msport Join Date: Jun 2020 Location: KY iTrader: (0)	Where did you get the injectors from if you don’t mind me asking?
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03-01-2023, 04:57 PM	#18
Tommy D Private First Class 119 Rep 197 Posts Drives: '17 BMW 440i GC, 2005 BMW 330i Join Date: Oct 2022 Location: PA iTrader: (0)	https://www.youtube.com/watch?v=QLF1GUyD-Aw Kern417 just posted a video on Injectors.
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