Carbon problems N55?

BMW_Belgier · 07-19-2012, 01:00 PM

Hello

Somebody heard something or had problems with carbon build-up?

I'm hoping the N55 is less affected...

Dark_Knight_335 · 07-19-2012, 03:37 PM

Much less affected- this is coming from a BMW engineering trainer I had the privilege of speaking with at my friend's wedding last week

Shahdog · 07-19-2012, 04:02 PM

Quote:

Originally Posted by Dark_Knight_335

Much less affected- this is coming from a BMW engineering trainer I had the privilege of speaking with at my friend's wedding last week

Sweet..

Good question OP

Juiced46 · 07-19-2012, 04:38 PM

Quote:

Originally Posted by Dark_Knight_335

Much less affected- this is coming from a BMW engineering trainer I had the privilege of speaking with at my friend's wedding last week

Which trainer was it?

boostd92 · 07-19-2012, 06:11 PM

The N55 is just as direct-injected (haha) as the N54. It may have slightly better CCV system but I don't think anything short of an extra injector in the intake manifold is going to keep carbon away. That's how Audi/MB do it now, and they don't have the carbon problems we do because gasoline is actually spraying the intake valves. They also use it for cold start and supplemental fueling in certain circumstances, IIRC.

Sam335ix · 07-19-2012, 06:16 PM

Take it to a shop for carbon cleaning after 30k miles if your concerned for about $300.00 and clean it right up. It does help with the performance but wtf do I know... I just like to set it and forget it and drive it :-)

BMW_Belgier · 07-19-2012, 06:19 PM

Quote:

Originally Posted by Dark_Knight_335

Much less affected- this is coming from a BMW engineering trainer I had the privilege of speaking with at my friend's wedding last week

Thanks

BMW_Belgier · 07-19-2012, 06:21 PM

Quote:

Originally Posted by Shahdog

Sweet..

Good question OP

Just wondering if BMW made some thoughts with the N55 about it after the problems with the N54

Dark_Knight_335 · 07-19-2012, 06:54 PM

Quote:

Originally Posted by Juiced46

Quote:

Originally Posted by Dark_Knight_335

Much less affected- this is coming from a BMW engineering trainer I had the privilege of speaking with at my friend's wedding last week

Which trainer was it?

I'll find out tomorrow, but from the horses mouth the N55 is significantly less problematic than the N54 when it comes to carbon, among other things.

Dark_Knight_335 · 07-19-2012, 06:55 PM

Walnut blast for those of you that are really concerned and have over 50,000 miles

BMW_Belgier · 07-19-2012, 07:04 PM

Quote:

Originally Posted by Dark_Knight_335

Walnut blast for those of you that are really concerned and have over 50,000 miles

And if you do it or done it: we need some feedback (maybe some pics before cleaning)

Dark_Knight_335 · 07-19-2012, 07:20 PM

You got it brother!
You'll have to get back to me in about 45,000 miles though, I only got 4K on the clock

BMW_Belgier · 07-19-2012, 07:24 PM

Quote:

Originally Posted by Dark_Knight_335

You got a brother!
You'll have to get back to me in about 45,000 miles though, I only got 4K on the clock

Roger that

NYC6 · 07-19-2012, 07:57 PM

Quote:

Originally Posted by boostd92

The N55 is just as direct-injected (haha) as the N54. It may have slightly better CCV system but I don't think anything short of an extra injector in the intake manifold is going to keep carbon away. That's how Audi/MB do it now, and they don't have the carbon problems we do because gasoline is actually spraying the intake valves. They also use it for cold start and supplemental fueling in certain circumstances, IIRC.

Agreed, the engines are damn near the same. Im not believing it. Wishful thinking.

JETmn · 08-06-2013, 12:23 PM

I am bringing this one back hoping that there is some updated info out there. I am starting to get a rough idle at times, sometimes it surges and it seems laggy at times. It seems a lot like carbon buildup, but I am not sure. 47k miles on it. Not sure if it is plugs or something possibly too, but no CEL. I am still under CPO to 100k.

BMW_Belgier · 08-06-2013, 05:54 PM

Quote:

Originally Posted by JETmn

I am bringing this one back hoping that there is some updated info out there. I am starting to get a rough idle at times, sometimes it surges and it seems laggy at times. It seems a lot like carbon buildup, but I am not sure. 47k miles on it. Not sure if it is plugs or something possibly too, but no CEL. I am still under CPO to 100k.

I actually had about the same problems... Got some new plugs and it was like night and day

Biohazard29 · 08-07-2013, 06:54 AM

This car prefers new plugs around every 25k miles

AGO 530 · 08-07-2013, 07:19 AM

I just replaced my plugs at 60,000km (apx 37,000 miles) the last 10, 000km W/ JB4 Stage 2 on Map5. I noticed a difference the first time I started the engine, idles much smoother and very strong acceleration again.

07-19-2012, 01:00 PM	#1
BMW_Belgier Lieutenant Colonel 99 Rep 1,597 Posts Drives: E92 335xi n55 Join Date: May 2012 Location: Switzerland iTrader: (0)	Carbon problems N55? Hello Somebody heard something or had problems with carbon build-up? I'm hoping the N55 is less affected...
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07-19-2012, 03:37 PM	#2
Dark_Knight_335 Came to the N55 Darkside 1112 Rep 12,740 Posts Drives: 2011 335 E93 M-Sport Join Date: May 2010 Location: NY/NJ iTrader: (28)	Much less affected- this is coming from a BMW engineering trainer I had the privilege of speaking with at my friend's wedding last week
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07-19-2012, 06:11 PM	#5
boostd92 Captain 62 Rep 759 Posts Drives: '11 E92 M-Sport Join Date: Jun 2009 Location: Chicago, IL iTrader: (1) Garage List 2011 BMW 335i M-Spo ... [7.26]	The N55 is just as direct-injected (haha) as the N54. It may have slightly better CCV system but I don't think anything short of an extra injector in the intake manifold is going to keep carbon away. That's how Audi/MB do it now, and they don't have the carbon problems we do because gasoline is actually spraying the intake valves. They also use it for cold start and supplemental fueling in certain circumstances, IIRC.
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07-19-2012, 06:16 PM	#6
Sam335ix Major 65 Rep 1,274 Posts Drives: 335 ix performance edition Join Date: Sep 2011 Location: Redskin Country iTrader: (0)	Take it to a shop for carbon cleaning after 30k miles if your concerned for about $300.00 and clean it right up. It does help with the performance but wtf do I know... I just like to set it and forget it and drive it :-) __________________ 2011 e90 KW V1, JB4, BMS Dp, BMS Intake, CP, Alpina Flash, ISO, E85 Coming soon to the garage: 2014 M3 Maybe M5
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07-19-2012, 06:55 PM	#10
Dark_Knight_335 Came to the N55 Darkside 1112 Rep 12,740 Posts Drives: 2011 335 E93 M-Sport Join Date: May 2010 Location: NY/NJ iTrader: (28)	Walnut blast for those of you that are really concerned and have over 50,000 miles
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07-19-2012, 07:20 PM	#12
Dark_Knight_335 Came to the N55 Darkside 1112 Rep 12,740 Posts Drives: 2011 335 E93 M-Sport Join Date: May 2010 Location: NY/NJ iTrader: (28)	You got it brother! You'll have to get back to me in about 45,000 miles though, I only got 4K on the clock
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08-06-2013, 12:23 PM	#15
JETmn Lieutenant Colonel 245 Rep 1,595 Posts Drives: 2011 335i xDrive Msport Join Date: Apr 2013 Location: Orlando iTrader: (0) Garage List 2011 335Xi [0.00]	I am bringing this one back hoping that there is some updated info out there. I am starting to get a rough idle at times, sometimes it surges and it seems laggy at times. It seems a lot like carbon buildup, but I am not sure. 47k miles on it. Not sure if it is plugs or something possibly too, but no CEL. I am still under CPO to 100k.
	Appreciate 0 Quote

08-07-2013, 06:54 AM	#17
Biohazard29 Private First Class 5 Rep 103 Posts Drives: 335i coupe 6sp Join Date: May 2012 Location: Orlando, FL iTrader: (1)	This car prefers new plugs around every 25k miles __________________ 2011/335i Msport/ 6sp Manual/ K&N filter/ Akrapovic Evo Exhaust System/ FORGE FMIC/ Cobb Stage 1 + FMIC
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08-07-2013, 07:19 AM	#18
AGO 530 ... 27 Rep 193 Posts Drives: SG '24 M3CX Join Date: Feb 2010 Location: Toronto iTrader: (2) Garage List 2017 BMW M3 [0.00]	I just replaced my plugs at 60,000km (apx 37,000 miles) the last 10, 000km W/ JB4 Stage 2 on Map5. I noticed a difference the first time I started the engine, idles much smoother and very strong acceleration again.
	Appreciate 0 Quote