e46 320d - bad mpg, black smoke and rattling noise when accelerating - BMW Forum - BimmerWerkz.com
3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 05-07-2010, 03:58 PM
n00b
 
Join Date: Mar 2010
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
bara_ac is on a distinguished road
(Thread Starter)
e46 320d - bad mpg, black smoke and rattling noise when accelerating

hey!
I know you guys aren't diesel drivers, but I'm asking anyway.
e46 320d 2002 saloon. when accelerating brutally in the second and third gears black smoke comes out. a lot. some will say that is normal for a diesel to smoke, but it is a lot of smoke. no error lights up, no problems on tester while running. cleaned the egr and found some improvement. little.
also in the second and third gears I get a rattling sound when underload and accelerating up through 2000rpm. changed the exhaust starting from the second cat and the muffler. no change.
and third. although the computer says 58 mpg on highway, when I do the maths using the fuel level sensor, it comes out that the consumption is around 40 mpg.
I'm thinking that the first and third problems are connected. not sure about the second one.
I would like to hear some opinions. thanks!
bara_ac is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 05-07-2010, 05:05 PM
OMFG another one!?
 
witeshark's Avatar
 
Join Date: Aug 2004
Location: Miami FL
Posts: 14,700
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice
Not enough air for the amount of fuel, maybe an air filter or MAF sensor issue(s)?

BMW

Sig by zeaq
witeshark is offline  
#3 (permalink) Old 05-08-2010, 01:06 AM
n00b
 
Join Date: Mar 2010
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
bara_ac is on a distinguished road
(Thread Starter)
shouldn't be a MAF error on tester if it was that? I changed the air filter last week, and did see some results. but the smoke's still there.
about the rattle. I searched the forums and only one had a breakthrough. the one with the head gasket. the problem is that he had low pressure with some injectors. I don't.
bara_ac is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E46, E90)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
320d smoke problem bmwbeard 3-Series (E46, E90) 2 05-07-2010 03:37 PM
Frankfurt Preview: BMW 320d Efficient Dynamics gets 57.4 mpg administrator BMW News 3 09-15-2009 01:51 PM
03 E46 - 320D Low power+Black smoke bapu 3-Series (E46, E90) 3 05-27-2009 06:29 PM
BMW 320d 2002 e46 - ticking noise coming from engine help!!! outlaw66 3-Series (E46, E90) 4 04-29-2009 03:29 AM
Rattling Noise on e46 320d when accelerating Vince320 3-Series (E46, E90) 7 03-22-2006 02:47 AM

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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome