Cylinder 6 misfire / thoughts?

adobeee · 04-02-2017, 05:01 PM

Got a “Service Engine Soon” light on my 2008 128i yesterday. Feels like the car cannot fully deliver power when accelerating normally. Experienced some rough engine idle right when I parked into my garage yesterday.
Car is at 85k miles now. I am the 2nd owner when I bought the car CPO at 23k miles from New Century BMW in Los Angeles. I think dealership replaced some electrical components shortly before I bought (since it’s CPO), but I certainly haven’t switched any electrical components since purchasing the car.

Might be a fault ignition coil or spark plug, but wanted to see if anyone has other thoughts? Thanks in advance everyone!

Carista iOS app shows the below:

BlueDriver iOS app shows the below:

E91WAG3N · 04-03-2017, 01:46 AM

Coil and plug would be my first guess. There is a service bulletin for that issue.

I experienced rough idle when coming to a stop before mine tripped the CEL and failed. Ended up replacing all 6 coils and plugs at 60k on my 2011 car.

Ankur194 · 04-05-2017, 05:07 PM

Quote:

Originally Posted by ubersteuer

Coil and plug would be my first guess. There is a service bulletin for that issue.

I experienced rough idle when coming to a stop before mine tripped the CEL and failed. Ended up replacing all 6 coils and plugs at 60k on my 2011 car.

+1 - Same happened to my 2011, dealer replaced 1 coil under warranty. Happened again so dealer replaced all coils and plugs the second time.

Mach1er · 04-07-2017, 12:13 AM

Ditto to the rest, but usually coils fail before plugs.

STR8-6IX · 04-14-2017, 11:40 AM

you probably need a new ignition coil. change all your spark plugs while you are in there.

adobeee · 04-17-2017, 01:54 PM

Replaced all 6 ignition coils and spark plugs (been 60k miles since they were last replaced) so problem is solved!!

sjd6795 · 04-18-2017, 06:59 PM

I'm having missfires in all my cylinders I replaced all my plugs and coils and the problem still occurs on my 11" 135i. A month ago the dealer replaced the valve cover gasket, 2 injectors, and the vanos motor. I'm kind of at a loss at what it could be and I have it scheduled to go back to the dealer on the 24th.

04-02-2017, 05:01 PM	#1
adobeee Captain 170 Rep 821 Posts Drives: '23 X6 M50i Join Date: Jul 2011 Location: Los Angeles iTrader: (0)	Cylinder 6 misfire / thoughts? Got a “Service Engine Soon” light on my 2008 128i yesterday. Feels like the car cannot fully deliver power when accelerating normally. Experienced some rough engine idle right when I parked into my garage yesterday. Car is at 85k miles now. I am the 2nd owner when I bought the car CPO at 23k miles from New Century BMW in Los Angeles. I think dealership replaced some electrical components shortly before I bought (since it’s CPO), but I certainly haven’t switched any electrical components since purchasing the car. Might be a fault ignition coil or spark plug, but wanted to see if anyone has other thoughts? Thanks in advance everyone! Carista iOS app shows the below: BlueDriver iOS app shows the below:
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04-03-2017, 01:46 AM	#2
E91WAG3N Wagon Addict 1248 Rep 1,217 Posts Drives: E39, E91, E91 Join Date: Sep 2015 Location: Las Vegas iTrader: (2)	Coil and plug would be my first guess. There is a service bulletin for that issue. I experienced rough idle when coming to a stop before mine tripped the CEL and failed. Ended up replacing all 6 coils and plugs at 60k on my 2011 car.
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04-07-2017, 12:13 AM	#4
Mach1er Lieutenant 86 Rep 524 Posts Drives: '13 128i Join Date: Mar 2013 Location: Austin, TX iTrader: (0)	Ditto to the rest, but usually coils fail before plugs. __________________ '13 128i \| 6MT \| SGM \| Black Boston \| Black Gloss \| Lighting \| Premium \| Tech \| HK \| Anti-Theft \| [CDV-Delete \| Clutch Stop \| 30% Pinnacle] Ordered 2.23 \| Production Begin 3.7 \| Ends 3.15 \| Released to carrier 3.18 \| At port 3.19 \| Departed 3.23 (K-line to Brunswick) \| Arrived 4.7 \| Truck 4.12 \| Dealer 4.19
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04-14-2017, 11:40 AM	#5
STR8-6IX Banned 536 Rep 2,825 Posts Drives: RWD 528i N52 Join Date: Nov 2016 Location: Toronto iTrader: (0)	you probably need a new ignition coil. change all your spark plugs while you are in there.
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04-17-2017, 01:54 PM	#6
adobeee Captain 170 Rep 821 Posts Drives: '23 X6 M50i Join Date: Jul 2011 Location: Los Angeles iTrader: (0)	Replaced all 6 ignition coils and spark plugs (been 60k miles since they were last replaced) so problem is solved!!
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04-18-2017, 06:59 PM	#7
sjd6795 Enlisted Member 1 Rep 33 Posts Drives: 2011 135i M sport Join Date: Mar 2016 Location: Oregon iTrader: (0)	I'm having missfires in all my cylinders I replaced all my plugs and coils and the problem still occurs on my 11" 135i. A month ago the dealer replaced the valve cover gasket, 2 injectors, and the vanos motor. I'm kind of at a loss at what it could be and I have it scheduled to go back to the dealer on the 24th. __________________ 2011 135i M sport DCT / Injen intake, vrsf 3" chargepipe and vrsf 3.5" catless downpipe / JB4 with 40% E85
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