335i missfire/knocking

335ilux · 05-26-2017, 01:37 PM

I purchased a 335i 6speed yesterday, the problem with it is the owner before me put a new 550i clutch and new flywheel in and it has a bad vibration. much worse under load but is still present at idle. it is also showing missfire cylinder 4, but after driving it 1 hour and 30 minutes home, it went in reduced power mode and showing missfire 1-6. could the clutch and fly wheel be the culprit of the missfire, or the missfire be the culprit of the shaking and knocking sound? I have a a video if I can get it to upload. I'll continue to work on getting the video up.

jwebb335xi · 05-26-2017, 02:12 PM

Quote:

Originally Posted by 335ilux

I purchased a 335i 6speed yesterday, the problem with it is the owner before me put a new 550i clutch and new flywheel in and it has a bad vibration. much worse under load but is still present at idle. it is also showing missfire cylinder 4, but after driving it 1 hour and 30 minutes home, it went in reduced power mode and showing missfire 1-6. could the clutch and fly wheel be the culprit of the missfire, or the missfire be the culprit of the shaking and knocking sound? I have a a video if I can get it to upload. I'll continue to work on getting the video up.

Misfire is more typically related to plugs, coils and injectors.. a set of plugs is a pretty quick and inexpensive place to start. Also, depending on miles, coils can be considered preventative maintenance..again, very easy!!

335ilux · 05-26-2017, 02:14 PM

coils and plugs have been changed. here is a video of it. [IMG]

[/IMG]

Antetokounmpo · 05-26-2017, 02:36 PM

that doesn't sound like a misfire, you'd have a code if it was missing that bad anyways.

335ilux · 05-26-2017, 02:36 PM

it sounds a little further back than the motor and had no noise prior to the clutch and flywheel swap (claims the previos owner)
It does throw a code, at first it was missfire cyl 4 then after getting the car home i rescaned and it showed miss fire cylinders 1 2 3 4 5 and 6

ppointer · 05-26-2017, 02:49 PM

If you swap around two coils, the codes should follow the bad coil. That is a cheap way of determining a bad coil.

335ilux · 05-26-2017, 02:50 PM

that might have worked before it showed miss fire on all cylinders

335ilux · 05-26-2017, 07:43 PM

cleared the codes and took it for a drive, though the problem is still there. it only gave codes of cyl 3 missfire, cyl 2 missfire and a new one of P10A5 injectors initialization error (group 1) any idea What that one is all about?

jwebb335xi · 05-28-2017, 01:22 PM

Quote:

Originally Posted by 335ilux

cleared the codes and took it for a drive, though the problem is still there. it only gave codes of cyl 3 missfire, cyl 2 missfire and a new one of P10A5 injectors initialization error (group 1) any idea What that one is all about?

Way over my head!!

I hope somebody with more experience can help here.. Sensors, fuel pump(s), injectors, coils, plugs...?

Have you tried swapping the coils at misfiring cylinders to see if problem follows coils??

MysticRob · 05-28-2017, 01:46 PM

Quote:

Originally Posted by 335ilux

I purchased a 335i 6speed yesterday, the problem with it is the owner before me put a new 550i clutch and new flywheel in and it has a bad vibration. much worse under load but is still present at idle. it is also showing missfire cylinder 4, but after driving it 1 hour and 30 minutes home, it went in reduced power mode and showing missfire 1-6. could the clutch and fly wheel be the culprit of the missfire, or the missfire be the culprit of the shaking and knocking sound? I have a a video if I can get it to upload. I'll continue to work on getting the video up.

First things first, get the correct parts on the car to treat the vibration. Next, if you're having misfires then check plugs, coils, injectors, and ensure the injectors are coded properly into the DME. Take the problems one at a time, and ensure the PROPER parts are used.

335ilux · 05-28-2017, 04:35 PM

pulled the trans mission today. took me about 2-3 hours by my self. way easier than i was expecting heres a video if it runing with the transmission removed. thoughts? seems as though the flywheel is the culprit but I'd like a second opinion. I don't think a missfire would cause the fly wheel to woble and knock like that or would it?
[IMG]

[/IMG]

05-26-2017, 01:37 PM	#1
335ilux Enlisted Member 35 Rep 36 Posts Drives: 2007 335i 6 speed manual Join Date: May 2017 Location: Clarksville ar iTrader: (0)	335i missfire/knocking I purchased a 335i 6speed yesterday, the problem with it is the owner before me put a new 550i clutch and new flywheel in and it has a bad vibration. much worse under load but is still present at idle. it is also showing missfire cylinder 4, but after driving it 1 hour and 30 minutes home, it went in reduced power mode and showing missfire 1-6. could the clutch and fly wheel be the culprit of the missfire, or the missfire be the culprit of the shaking and knocking sound? I have a a video if I can get it to upload. I'll continue to work on getting the video up.
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05-26-2017, 02:14 PM	#3
335ilux Enlisted Member 35 Rep 36 Posts Drives: 2007 335i 6 speed manual Join Date: May 2017 Location: Clarksville ar iTrader: (0)	coils and plugs have been changed. here is a video of it. [IMG] [/IMG]
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05-26-2017, 02:36 PM	#4
Antetokounmpo Brigadier General 1560 Rep 3,475 Posts Drives: E90 6MT FBO; '18 F150 Platinum Join Date: Jul 2013 Location: WI iTrader: (3) Garage List 2018 Ford F-150 Pla ... [0.00] 2008 BMW 335xi [0.00]	that doesn't sound like a misfire, you'd have a code if it was missing that bad anyways. __________________ 2008 335xi 6MT \| VRSF Catless DP \| VRSF 7" FMIC \| VRSF CP \| TIAL BOV \| DCI \| MHD 2+ BC Racing BR \| Stoptech 600 \| Firehawk Indy 500 255 Square \| Atric Altimax 225 Sq. 2018 F-150 Platinum 701A \| FX4 \| 3.5 EcoBeast
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05-26-2017, 02:36 PM	#5
335ilux Enlisted Member 35 Rep 36 Posts Drives: 2007 335i 6 speed manual Join Date: May 2017 Location: Clarksville ar iTrader: (0)	it sounds a little further back than the motor and had no noise prior to the clutch and flywheel swap (claims the previos owner) It does throw a code, at first it was missfire cyl 4 then after getting the car home i rescaned and it showed miss fire cylinders 1 2 3 4 5 and 6
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05-26-2017, 02:49 PM	#6
ppointer Major 996 Rep 1,234 Posts Drives: '01 Z3M, '12 335is, '22 540i Join Date: Jul 2013 Location: FLL iTrader: (4) Garage List 2012 BMW 335is For ... [7.10] 2001 M Roadster [10.00] 2012 BMW 335i [7.90] 1967 Chevrolet Corv ... [10.00] 2008 Infiniti QX56 [5.00] 2013 BMW M3 Vert [10.00] 2022 BMW 540i [0.75] 2009 528i [9.50]	If you swap around two coils, the codes should follow the bad coil. That is a cheap way of determining a bad coil.
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05-26-2017, 02:50 PM	#7
335ilux Enlisted Member 35 Rep 36 Posts Drives: 2007 335i 6 speed manual Join Date: May 2017 Location: Clarksville ar iTrader: (0)	that might have worked before it showed miss fire on all cylinders
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05-26-2017, 07:43 PM	#8
335ilux Enlisted Member 35 Rep 36 Posts Drives: 2007 335i 6 speed manual Join Date: May 2017 Location: Clarksville ar iTrader: (0)	cleared the codes and took it for a drive, though the problem is still there. it only gave codes of cyl 3 missfire, cyl 2 missfire and a new one of P10A5 injectors initialization error (group 1) any idea What that one is all about?
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05-28-2017, 04:35 PM	#11
335ilux Enlisted Member 35 Rep 36 Posts Drives: 2007 335i 6 speed manual Join Date: May 2017 Location: Clarksville ar iTrader: (0)	pulled the trans mission today. took me about 2-3 hours by my self. way easier than i was expecting heres a video if it runing with the transmission removed. thoughts? seems as though the flywheel is the culprit but I'd like a second opinion. I don't think a missfire would cause the fly wheel to woble and knock like that or would it? [IMG] [/IMG]
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