E90Post
 


jb4store
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > CARBON build up, ONLY 27K miles!



Reply
 
Thread Tools Search this Thread
      07-12-2012, 02:36 PM   #1
Dmacc
Colonel
53

 
Drives: 2010 135i
Join Date: Mar 2010
Location: Nor Cal


Posts: 2,646
iTrader: (1)

Exclamation CARBON build up, ONLY 27K miles!

So I had been getting a pesky misfire that started over 6 weeks ago, and had continuousy been bringing it in to bmw to get them to fix the problem, but even after they replaced all the plugs and the injectors, there was still a misfire on cylinder 5. Two days ago I brought the car in for the 4th time to see if maybe it was a coil pack that was causing it. Today I got a call from my adviser saying that they had opened a PUMA case with bmwna, and that when they took off the intake manifold, they were able to see plenty and plenty of carbon build up.
He told me that he's just waiting on word from bmwna if they can go ahead and walnut blast my engine. All of this will be covered under warranty.

since below 1k I've been tuned, so that's one reason why I assume I have such bad build up at such a low mileage. As far as I have searched on e90post, I haven't seen a thread of someone with below 30k miles on the car that had to deal with carbon build up? I just wanted to let you guys know that these cars build up REEEEEALLy fast with carbon, so if there are some unsolved misfires that keep reoccurring out there and you think you've tried everything, don't forget to consider carbon build up!

My mods I've run in the last 26k miles are just DCIs, cutback exhaust, procede v5/jb4, and downpipes.

I'll update this thread when I get a call back from my SA but I wanted to open this up for discussion if anyone is seeing similar things happen to their low mileage n54.
__________________

thanks to MGallop
Appreciate 0
      07-12-2012, 02:39 PM   #2
obert
Lieutenant Colonel
United_States
25

 
obert's Avatar
 
Drives: 08 E90 N54 335xi
Join Date: Oct 2011
Location: Seattle Wa


Posts: 1,597
iTrader: (18)

This is very common with these motors. It will have to be done again so just keep that in mind. I think milage will vary from case to case.

I will be doing the cleaning really soon on mine.
Appreciate 0
      07-12-2012, 02:42 PM   #3
e90328i
Banned
10

 
Drives: 07 E90 335i
Join Date: May 2011
Location: socal


Posts: 387
iTrader: (4)

Wow, mine hasn't been looked at or cleaned ever in 65k miles lol. Did you experience any misfire on stock map? prior to blasting or was it only under heavy boost?
Appreciate 0
      07-12-2012, 02:57 PM   #4
Dmacc
Colonel
53

 
Drives: 2010 135i
Join Date: Mar 2010
Location: Nor Cal


Posts: 2,646
iTrader: (1)

Quote:
Originally Posted by e90328i View Post
Wow, mine hasn't been looked at or cleaned ever in 65k miles lol. Did you experience any misfire on stock map? prior to blasting or was it only under heavy boost?
One of the main symptoms that started appearing was one that you get when you get the code for the coolant sensor gradient. all of a sudden on the freeway, you will just lose power randomly with no warning lights or ses lights popping up. So you have to pull over, restart the car, and everything is fine again. Every time it kept losing power, I would hear the radiator fan come on full blast. And this happened even when I was on the stock map.
__________________

thanks to MGallop
Appreciate 0
      07-12-2012, 02:57 PM   #5
Dmacc
Colonel
53

 
Drives: 2010 135i
Join Date: Mar 2010
Location: Nor Cal


Posts: 2,646
iTrader: (1)

Quote:
Originally Posted by obert View Post
This is very common with these motors. It will have to be done again so just keep that in mind. I think milage will vary from case to case.

I will be doing the cleaning really soon on mine.
I plan on getting mine checked again around 60k hopefully if I can hold out that long
__________________

thanks to MGallop
Appreciate 0
      07-12-2012, 03:07 PM   #6
e90328i
Banned
10

 
Drives: 07 E90 335i
Join Date: May 2011
Location: socal


Posts: 387
iTrader: (4)

Quote:
Originally Posted by Dmacc View Post
One of the main symptoms that started appearing was one that you get when you get the code for the coolant sensor gradient. all of a sudden on the freeway, you will just lose power randomly with no warning lights or ses lights popping up. So you have to pull over, restart the car, and everything is fine again. Every time it kept losing power, I would hear the radiator fan come on full blast. And this happened even when I was on the stock map.
Never had a coolant code, but i have lost power under high boost and have heard the fan on really loud. Im not paying 800 for a walnut blast considering I have warranty till 100k so ill have to wait until it causes power loss on stock maps.. only happens with jb4 so far... Should look at the valves anyways at 65k they are probably disgusting.
Appreciate 0
      07-12-2012, 03:20 PM   #7
benzy89
Banned
United_States
28

 
Drives: '08 E90 335i
Join Date: Jan 2012
Location: Northern NJ


Posts: 2,396
iTrader: (3)

Garage List
2008 BMW 335i  [3.75]
Could be that the crap gas out in CA is clogging the valves up faster. There's no way to 100% prevent getting them cleaned eventually, but running Meth/E85 and an OCC can help fight off the carbon build up
Appreciate 0
      07-12-2012, 03:23 PM   #8
vfeng
Captain
United_States
13

 
vfeng's Avatar
 
Drives: E90 335i
Join Date: Mar 2009
Location: Norcal


Posts: 932
iTrader: (16)

Garage List
2008 E90 335i  [4.50]
which dealer do you go to that offers walnut blasting? just wondering cuz i asked fremont and they only do the chemical method
Appreciate 0
      07-12-2012, 03:26 PM   #9
Dmacc
Colonel
53

 
Drives: 2010 135i
Join Date: Mar 2010
Location: Nor Cal


Posts: 2,646
iTrader: (1)

Quote:
Originally Posted by vF335i View Post
which dealer do you go to that offers walnut blasting? just wondering cuz i asked fremont and they only do the chemical method
BMW of Mountain view, formerly known as Allison BMW. They're great there!
__________________

thanks to MGallop
Appreciate 0
      07-12-2012, 03:28 PM   #10
Dmacc
Colonel
53

 
Drives: 2010 135i
Join Date: Mar 2010
Location: Nor Cal


Posts: 2,646
iTrader: (1)

Quote:
Originally Posted by benzy89 View Post
Could be that the crap gas out in CA is clogging the valves up faster. There's no way to 100% prevent getting them cleaned eventually, but running Meth/E85 and an OCC can help fight off the carbon build up
I was running 50/50 e85 with 91 and would notice whenever I started the car in the morning that the cold starts weren't ever able to find a consistent idle, shiv had directed me towards a hardware issue as opposed to a software issue, and turns out he was right!
__________________

thanks to MGallop
Appreciate 0
      07-12-2012, 03:32 PM   #11
Tony_Touch
Life to short! Drive a BMW!
United_States
0

 
Drives: 2008 335xi
Join Date: Aug 2011
Location: NH


Posts: 7
iTrader: (0)

I had mine blasted with walnuts at 37K and the car is stock except for bms intake.
Appreciate 0
      07-12-2012, 03:35 PM   #12
mave198
Lieutenant
6

 
mave198's Avatar
 
Drives: 2007 BMW 335i
Join Date: Jul 2010
Location: Brooklyn NYC


Posts: 446
iTrader: (2)

At 55k mine were pretty badly caked up. Still in the air how much a oil CC helps.

She is happier now with clean intake valves ...
Appreciate 0
      07-12-2012, 03:52 PM   #13
Jeff@TopGearSolutions
BimmerPost Supporting Vendor
United_States
237


 
Jeff@TopGearSolutions's Avatar
 
Drives: C6 Z06, GSXR-750, 09 335i
Join Date: Dec 2008
Location: TopGearSolutions.com


Posts: 18,039
iTrader: (32)

Send a message via AIM to Jeff@TopGearSolutions
I believe it. The OCC is not really for carbon build up in the sense that it will eliminate all carbon build up. With the best OCC in the world this car will still build up carbon on the intake valves because it is a characteristic of DI motors.

The OCC simply reduces the amount of intake in your intercooler and charge pipe and reduces the amount that gets to your valves from blow by. One should expect no matter what they do that around 30K there valves will need a cleaning.
Appreciate 0
      07-12-2012, 04:32 PM   #14
nafoo
Major
United_States
17

 
nafoo's Avatar
 
Drives: Boosted Bimmer
Join Date: Jan 2010
Location: Earth


Posts: 1,148
iTrader: (15)

Pics or ban!
Appreciate 0
      07-12-2012, 05:27 PM   #15
benzy89
Banned
United_States
28

 
Drives: '08 E90 335i
Join Date: Jan 2012
Location: Northern NJ


Posts: 2,396
iTrader: (3)

Garage List
2008 BMW 335i  [3.75]
I'm at 35k now, thinking I'll get it done in the next month
Appreciate 0
      07-12-2012, 05:33 PM   #16
e90328i
Banned
10

 
Drives: 07 E90 335i
Join Date: May 2011
Location: socal


Posts: 387
iTrader: (4)

lol bmw should just make the walnut blasting at an interval of 30k miles for free!!!
Appreciate 0
      07-12-2012, 05:44 PM   #17
Dmacc
Colonel
53

 
Drives: 2010 135i
Join Date: Mar 2010
Location: Nor Cal


Posts: 2,646
iTrader: (1)

Quote:
Originally Posted by e90328i View Post
lol bmw should just make the walnut blasting at an interval of 30k miles for free!!!
It's just a matter of time before another law suit is started for misfires due to rapid carbon build up, or at least an attempt at a law suit haha
__________________

thanks to MGallop
Appreciate 0
      07-12-2012, 05:55 PM   #18
JYohay
Banned
24

 
Drives: 2011 X5
Join Date: Mar 2012
Location: NY


Posts: 2,011
iTrader: (3)

Did ou remove our downpipes and exhaust before you brought it in?
Appreciate 0
      07-12-2012, 06:44 PM   #19
vasillalov
Mad Linux Guru On The Loose
Bulgaria
80

 
vasillalov's Avatar
 
Drives: 2008 335i Sedan
Join Date: Aug 2009
Location: Chicago, IL


Posts: 4,178
iTrader: (3)

Garage List
2008 335i E90  [4.00]
Quote:
Originally Posted by benzy89 View Post
Could be that the crap gas out in CA is clogging the valves up faster.
Sigh, yet again for 1 MILLIONTH time: the N54 is a direct injection motor. There is no fuel going into the intake manifold. It is injected directly into the combustion chamber and therefore it has absolutely no contact with the intake valves.

Even if you somehow were able to get the N54 to run on lard, the intake valves would not be in any worse condition than if you ran on European 103 octane jungle juice.
__________________
Equal Opportunity Harasser!
6MT | COBB | AR | AE | Forge DV | HPF | P3 Gauge | Hybrid Intake | O.S.Giken TCD | All M3 bits | TCKLine
Appreciate 0
      07-12-2012, 07:31 PM   #20
Dmacc
Colonel
53

 
Drives: 2010 135i
Join Date: Mar 2010
Location: Nor Cal


Posts: 2,646
iTrader: (1)

Quote:
Originally Posted by JYohay
Did ou remove our downpipes and exhaust before you brought it in?
I was stock when I went in.
__________________

thanks to MGallop
Appreciate 0
      07-12-2012, 10:12 PM   #21
JamesM3M5
Some dude
United_States
23

 
Drives: E28 M5, E92 335i
Join Date: Sep 2011
Location: Northern VA


Posts: 1,757
iTrader: (0)

What oil? The cheap BMW "synthetic" is crap.
__________________
RRT Racing
E92 335i/6MT Dinan Stage 3: intercooler, oil cooler, intake, flash, exhaust, LW dual-mass flywheel.
Vishnu PWM methanol custom trunk mount, Diffsonline 3-clutch Salisbury custom diff, Ohlins Road and Track coilovers, Vorshlag camber plates, much more...
E28 M5 w/ buncha stuff, R171 SLK350
Appreciate 0
      07-12-2012, 10:17 PM   #22
Dmacc
Colonel
53

 
Drives: 2010 135i
Join Date: Mar 2010
Location: Nor Cal


Posts: 2,646
iTrader: (1)

Quote:
Originally Posted by JamesM3M5 View Post
What oil? The cheap BMW "synthetic" is crap.
Cheap bmw synthetic it was.
__________________

thanks to MGallop
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 10:32 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST