BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      01-13-2014, 05:26 PM   #1
BiscottiGelato
Captain
BiscottiGelato's Avatar
Canada
65
Rep
812
Posts

Drives: 09 135i M Sport 6MT
Join Date: Nov 2006
Location: GVA

iTrader: (2)

Aging 135i's. Worsening Fuel Econ? Power Down?

Is it typical to have power coming down and fuel economy worsening? I do track my car. I have been doing oil change about every 8000km. Been on Mobil 1. After the latest change, it feels as if my car dropped 1 full L/100km in fuel economy. Never dynoed my car so not too sure about whether any acceleration decrease either...

Any common issues that I should look out for as my car ages? At 77,000km right now. Maybe clutch is starting to go? Please advise on area I should pay attn to. Thanks!
__________________
Ground Control Camber Plates, Ferrodo D2500 w/ E86 MZ4 2 piece rotors, Dunlop Direzza ZII on Apex EC-7s
Appreciate 0
      01-13-2014, 05:29 PM   #2
gregthegr8
Admiral of the Fleet
gregthegr8's Avatar
179
Rep
3,503
Posts

Drives: Cars Usually
Join Date: Jan 2008
Location: Los Angeles, CA

iTrader: (5)

Quote:
Originally Posted by BiscottiGelato View Post
Is it typical to have power coming down and fuel economy worsening? I do track my car. I have been doing oil change about every 8000km. Been on Mobil 1. After the latest change, it feels as if my car dropped 1 full L/100km in fuel economy. Never dynoed my car so not too sure about whether any acceleration decrease either...

Any common issues that I should look out for as my car ages? At 77,000km right now. Maybe clutch is starting to go? Please advise on area I should pay attn to. Thanks!
You may want to get your engine walnut blasted as that might solve much of the engine woes you may be experiencing. I'd start there, as that cleanup may get a ton of gunk out of your engine and have it perform back to normal and at a more efficient level as well.
Appreciate 0
      01-15-2014, 06:05 PM   #3
BiscottiGelato
Captain
BiscottiGelato's Avatar
Canada
65
Rep
812
Posts

Drives: 09 135i M Sport 6MT
Join Date: Nov 2006
Location: GVA

iTrader: (2)

So everybody else have awesome power and fuel econ all the way up to 100k miles?
__________________
Ground Control Camber Plates, Ferrodo D2500 w/ E86 MZ4 2 piece rotors, Dunlop Direzza ZII on Apex EC-7s
Appreciate 0
      01-15-2014, 07:07 PM   #4
Cheeze1
Private First Class
15
Rep
120
Posts

Drives: 135i
Join Date: Jan 2014
Location: United States

iTrader: (0)

Quote:
Originally Posted by BiscottiGelato View Post
So everybody else have awesome power and fuel econ all the way up to 100k miles?
Did you see the post above yours? Have you ever had your engine walnut blasted or at least checked for carbon fouling?
Appreciate 0
      01-15-2014, 07:54 PM   #5
gregthegr8
Admiral of the Fleet
gregthegr8's Avatar
179
Rep
3,503
Posts

Drives: Cars Usually
Join Date: Jan 2008
Location: Los Angeles, CA

iTrader: (5)

Quote:
Originally Posted by phil97m3blue View Post
Did you see the post above yours? Have you ever had your engine walnut blasted or at least checked for carbon fouling?
Hey, I tried. Plus, there aren't too many 135s past the 100k mile mark.
Appreciate 0
      01-15-2014, 07:59 PM   #6
Dackelone
European Editor
Dackelone's Avatar
Germany
9002
Rep
22,870
Posts

Drives: N54 e82
Join Date: Feb 2010
Location: Bayern, Germany

iTrader: (1)

Old Spark plugs? Injectors?

To me(and to others) this sounds like a classic case of carbon buildup.

What "other" problems does your car have that your gonna tell us about? Rough idle? Surging while cruising at a constant throttle position. ???
__________________
Appreciate 0
      01-15-2014, 08:07 PM   #7
P90Puma
Would rather be driving.
Canada
8
Rep
175
Posts

Drives: 2008 135i 6MT M-Sport
Join Date: Aug 2013
Location: Ontario, Canada

iTrader: (1)

I am double your KM and the car is fine, get it walnut blasted like the others have said.
__________________
135i JB4 w/ BMS Flash
Appreciate 0
      01-16-2014, 02:44 PM   #8
ShocknAwe
Major General
ShocknAwe's Avatar
United_States
1760
Rep
6,459
Posts

Drives: E82 N54
Join Date: Jul 2012
Location: Charleston

iTrader: (15)

Quote:
Originally Posted by gregthegr8 View Post
You may want to get your engine walnut blasted as that might solve much of the engine woes you may be experiencing. I'd start there, as that cleanup may get a ton of gunk out of your engine and have it perform back to normal and at a more efficient level as well.
This is where I would start. At least have it scoped.
__________________
2010 135i M-Sport 6MT Jet Black
N54 | BUILD THREAD
Appreciate 0
      01-16-2014, 03:00 PM   #9
MZWIE
Lieutenant Colonel
263
Rep
1,589
Posts

Drives: M2
Join Date: Jun 2007
Location: GEORGIA

iTrader: (0)

I'm at 90k miles w/o walnuts. Still going strong.
Appreciate 0
      01-17-2014, 10:57 AM   #10
JDelphiki
Enlisted Member
United_States
1
Rep
43
Posts

Drives: 2009 TSM 135i
Join Date: Mar 2010
Location: Texas

iTrader: (0)

I'm at 76k miles and had the carbon build up taken care of twice so far, each time the car feels like it breathes better, especially on the top end. My MPG is around 19 for city driving and if I make road trips I can get 25MPG fairly easy.

No performance mods, I do have Apex Arc 8's on MPSS tires and the ducktail spoiler with carbon rear diffuser.
Appreciate 0
      01-21-2014, 05:15 PM   #11
BiscottiGelato
Captain
BiscottiGelato's Avatar
Canada
65
Rep
812
Posts

Drives: 09 135i M Sport 6MT
Join Date: Nov 2006
Location: GVA

iTrader: (2)

Hmm. I don't really feel the engine having any other issues. Maybe the clutch getting a little weak. Maybe a clutch change in order soon.

I'll look into Carbon build-up and Walnut Blasting. Thanks!
__________________
Ground Control Camber Plates, Ferrodo D2500 w/ E86 MZ4 2 piece rotors, Dunlop Direzza ZII on Apex EC-7s
Appreciate 0
Post 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



All times are GMT -5. The time now is 08:12 AM.




1addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
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