Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

Reply
 
Thread Tools Display Modes
  #26  
Old 04-16-2011, 04:41 PM
drivinfaster's Avatar
drivinfaster drivinfaster is online now
bimmerfest Supporting Member
Location: in the sticks you piney
 
Join Date: Nov 2007
Posts: 10,925
Mein Auto: rescued bmw's
Quote:
Originally Posted by bluebee View Post
Update?
i haven't had the time to do any sort of informative diy on regrds to emissions...oh, wait, that's not the update that you were loooking for...nwvwemind, i'll just go to the back of the line and wait my turn again...


df
__________________
Reply With Quote
  #27  
Old 03-03-2012, 05:15 AM
rderow rderow is offline
Registered User
Location: mahattan beach ca
 
Join Date: Apr 2011
Posts: 12
Mein Auto: m3 convert smg e46 2002
2002 m3 failed smog..help! only 50k miles

Trying to figure out what to do with my 2002 m3 that failed smog. It barely missed NO and HC..

HC
15 mph max 49 - my number 71
25mph max 33 - my number 65

NO
15 mph max 409 my number 772
25 mh max 696 my number 728

It has an afe air filter (which i will replace with stock this weekend). It has an after market pipe and section 2 (stock cats) as well but that shouldnt matter. The guys at the shop ran the codes and it said it needed a new thermostat so that was replaced and still failed. My next step is clean mas sensor, change oil, and change air filter.

What else should I try? I was told valve job but dont have the cash right now
Reply With Quote
  #28  
Old 03-03-2012, 08:26 AM
Gooby's Avatar
Gooby Gooby is offline
Sexy Sax Man / Kebab Lord
Location: Streetz of B'
 
Join Date: Mar 2009
Posts: 6,521
Mein Auto: 1995 M3
Quote:
Originally Posted by rderow View Post
Trying to figure out what to do with my 2002 m3 that failed smog. It barely missed NO and HC..

HC
15 mph max 49 - my number 71
25mph max 33 - my number 65

NO
15 mph max 409 my number 772
25 mh max 696 my number 728

It has an afe air filter (which i will replace with stock this weekend). It has an after market pipe and section 2 (stock cats) as well but that shouldnt matter. The guys at the shop ran the codes and it said it needed a new thermostat so that was replaced and still failed. My next step is clean mas sensor, change oil, and change air filter.

What else should I try? I was told valve job but dont have the cash right now


All the stuff you and the guy at the shop told you to change is pointless. Thermostats, air filters, oil changes, etc. don't affect smog results.

Try looking for exhaust leaks (which cause the cats to run inefficient resulting in high NO). Also is your car misfiring? A misfiring car, which is usually because of old spark plug, can mess up emissions readings...

I'm literally having the same problem you are... =/
__________________

Instagram | @randytheus
Reply With Quote
  #29  
Old 03-03-2012, 08:33 AM
jonesin's Avatar
jonesin jonesin is online now
The Canadian Prick.
Location: Fort McMurray AB
 
Join Date: Dec 2008
Posts: 12,680
Mein Auto: '96 328is Cosmos
Sorry to contradict you Randy, but yes, each of those things can have effect on emissions tests. Also OP, I'd try running a can of seafoam through your car. then next attempt, make certain that your exhaust is nice and hot. Go for a good rip first, then don't let them make you wait until your car cools off. (Keep it idling fairly high if they tell you there's a wait).
__________________
Quote:
Originally Posted by hnaz View Post
I grew up in a time when the internet was just a baby. Grammar back then versus now... holy cow. You could watch the degradation of society as the internet became more mature.

HAS KEN HAD HIS MEDS YET?
Reply With Quote
  #30  
Old 03-03-2012, 08:36 AM
Gooby's Avatar
Gooby Gooby is offline
Sexy Sax Man / Kebab Lord
Location: Streetz of B'
 
Join Date: Mar 2009
Posts: 6,521
Mein Auto: 1995 M3
Quote:
Originally Posted by jonesin View Post
Sorry to contradict you Randy, but yes, each of those things can have effect on emissions tests. Also OP, I'd try running a can of seafoam through your car. then next attempt, make certain that your exhaust is nice and hot. Go for a good rip first, then don't let them make you wait until your car cools off. (Keep it idling fairly high if they tell you there's a wait).
Uhmmm how does an oil change affect emissions? =/
__________________

Instagram | @randytheus
Reply With Quote
  #31  
Old 03-03-2012, 09:02 AM
veteran011's Avatar
veteran011 veteran011 is offline
WARNING: Has Dumb Ideas
Location: Westchester Co, NY
 
Join Date: Oct 2011
Posts: 612
Mein Auto: 97 328is
Quote:
Originally Posted by drivinfaster View Post
first, 'NO' is 'NOx', the 'x' designates any number of O2 atoms in the molecule.
close. the "x" refers to the number of oxygen atoms (not O2 molecules as stated above).

nerd needs completed.
__________________
dab of oppo anyone?



Project List:
Replace coolant temp sensor
Replace starter
Brake and Power Steering Fluid Flush
Front Control Arms, Bushings, and Tie Rods
Replace Passenger Lock Actuator
Reglue Peeling Hedliner
Swirl removal
Reply With Quote
  #32  
Old 03-03-2012, 09:08 AM
Gooby's Avatar
Gooby Gooby is offline
Sexy Sax Man / Kebab Lord
Location: Streetz of B'
 
Join Date: Mar 2009
Posts: 6,521
Mein Auto: 1995 M3
Quote:
Originally Posted by veteran011 View Post
close. the "x" refers to the number of oxygen atoms (not O2 molecules as stated above).

nerd needs completed.
O2 is oxygen though...

You just said the same thing twice...
__________________

Instagram | @randytheus
Reply With Quote
  #33  
Old 03-03-2012, 09:14 AM
veteran011's Avatar
veteran011 veteran011 is offline
WARNING: Has Dumb Ideas
Location: Westchester Co, NY
 
Join Date: Oct 2011
Posts: 612
Mein Auto: 97 328is
O2 is the oxygen molecule: two oxygen atoms bonded together to form the molecule. so NOx could be NO or NO2.

its nitpicking but that's what i get for taking a lot of chemistry courses.
__________________
dab of oppo anyone?



Project List:
Replace coolant temp sensor
Replace starter
Brake and Power Steering Fluid Flush
Front Control Arms, Bushings, and Tie Rods
Replace Passenger Lock Actuator
Reglue Peeling Hedliner
Swirl removal
Reply With Quote
  #34  
Old 03-03-2012, 09:16 AM
Gooby's Avatar
Gooby Gooby is offline
Sexy Sax Man / Kebab Lord
Location: Streetz of B'
 
Join Date: Mar 2009
Posts: 6,521
Mein Auto: 1995 M3
Quote:
Originally Posted by veteran011 View Post
O2 is the oxygen molecule: two oxygen atoms bonded together to form the molecule. so NOx could be NO or NO2.

its nitpicking but that's what i get for taking a lot of chemistry courses.
Interesting...

I learned something new today...

Btw: I respect you for taking a lot of Chem classes. I hate Chem. I can't see myself taking it more than once.
__________________

Instagram | @randytheus
Reply With Quote
  #35  
Old 03-03-2012, 12:10 PM
rderow rderow is offline
Registered User
Location: mahattan beach ca
 
Join Date: Apr 2011
Posts: 12
Mein Auto: m3 convert smg e46 2002
Waiting now. Seafoam sounded complicated an risky. Fingers crossed! It has new plugs in it and the co
Outer recall was done. Hasn't had te valves adjusted yet though.
Reply With Quote
  #36  
Old 03-03-2012, 01:31 PM
rderow rderow is offline
Registered User
Location: mahattan beach ca
 
Join Date: Apr 2011
Posts: 12
Mein Auto: m3 convert smg e46 2002
update:
Got all numbers to half nearly of what they were and all to pass accept 25mph HC. I put in clean high end gas Shell and crc smog and ran the heck out of it. Putting ina stock air filter now and going to get the oil change i guess for good luck. Retest at 3.
Reply With Quote
  #37  
Old 03-03-2012, 05:33 PM
drivinfaster's Avatar
drivinfaster drivinfaster is online now
bimmerfest Supporting Member
Location: in the sticks you piney
 
Join Date: Nov 2007
Posts: 10,925
Mein Auto: rescued bmw's
Quote:
Originally Posted by KaptinKP View Post
Uhmmm how does an oil change affect emissions? =/
it does, simply because of residual hc from the oil that stays on the cylinder walls past the rings. the fresher oil is a little thicker and less likely to be burned.


Quote:
Originally Posted by veteran011 View Post
close. the "x" refers to the number of oxygen atoms (not O2 molecules as stated above).

nerd needs completed.
touche!!

Quote:
Originally Posted by KaptinKP View Post
O2 is oxygen though...

You just said the same thing twice...
(see below...)

Quote:
Originally Posted by veteran011 View Post
O2 is the oxygen molecule: two oxygen atoms bonded together to form the molecule. so NOx could be NO or NO2.

its nitpicking but that's what i get for taking a lot of chemistry courses.
again, you are correct.

however, the term i used is a common emissions expression used for working on cars. i mean, how would it look to a customer if i went up to hank (a big, hairy neandertal looking wrench) and asked about his 'O' results??



just sayin...
df
__________________
Reply With Quote
  #38  
Old 03-03-2012, 06:02 PM
rderow rderow is offline
Registered User
Location: mahattan beach ca
 
Join Date: Apr 2011
Posts: 12
Mein Auto: m3 convert smg e46 2002
after oil change was worse no idea why! Back to the drawing board. My mechanic said start with a valve adjustment since I dont think the car has had one in quite some time.
Reply With Quote
  #39  
Old 03-03-2012, 06:18 PM
hornhospital's Avatar
hornhospital hornhospital is offline
D'oh, You kids!
Location: In the Grumpy Chair
 
Join Date: Jan 2008
Posts: 15,098
Mein Auto: 1995 318is / 1993 325is
If it's the 2002 you list in your info, it gets a valve adjustment every time you fire it up. The lifters are hydraulic. There is no manual adjustment. I'm not too impressed with your mechanic.
__________________
Quotes to live by:
guessing gets expensive...drivinfaster
nothing is more expensive than a cheap BMW...c4harpe13
buying a ratty example (of a BMW) is a parasitic relationship.(and you ain't the mosquito) 7pilot

Ken Kanne, Silverhill, AL, E36 Forum Mod/Craigslist addict/Hoarder of all sorts of stuff
BMW-CCA #441426
1995 318is "Bebe"; 1993 325is "Elvira" 1985 635CSi "Katja" 1984 633CSi "Sylvia"
HAVE I HAD MY MEDS YET?

Reply With Quote
  #40  
Old 03-03-2012, 06:57 PM
rderow rderow is offline
Registered User
Location: mahattan beach ca
 
Join Date: Apr 2011
Posts: 12
Mein Auto: m3 convert smg e46 2002
Hmmm
What is the whole deal with shimming then? I might be saying it wrong but thought an adjustment was part of inspection 2. I am open to suggestions as to what to throw money at next. Def high hc.. Any ideas..
Reply With Quote
  #41  
Old 03-03-2012, 06:59 PM
granlund granlund is offline
Officially Welcomed to the 'Fest
Location: Dayton, OH
 
Join Date: Jan 2011
Posts: 553
Mein Auto: -02 530 & -92 325is
Quote:
Originally Posted by hornhospital View Post
If it's the 2002 you list in your info, it gets a valve adjustment every time you fire it up. The lifters are hydraulic. There is no manual adjustment. I'm not too impressed with your mechanic.
If it's a 2002 e46 M3 with an S54 engine, it does in fact not have hydraulic lash adjusters and will need periodic valve adjustments.

Last edited by granlund; 03-03-2012 at 07:04 PM.
Reply With Quote
  #42  
Old 03-03-2012, 07:01 PM
rderow rderow is offline
Registered User
Location: mahattan beach ca
 
Join Date: Apr 2011
Posts: 12
Mein Auto: m3 convert smg e46 2002
Side note autozone guy said no adjustment needed as well.. Mechanic worked at BMW... The world is upside down when autzonion outsmarts BMW trained mechanic.. Too funny
Reply With Quote
  #43  
Old 03-03-2012, 07:04 PM
granlund granlund is offline
Officially Welcomed to the 'Fest
Location: Dayton, OH
 
Join Date: Jan 2011
Posts: 553
Mein Auto: -02 530 & -92 325is
Check all six spark plugs for what color they are. The insulator near the tip should be a very light beige/grey dusting. Uneven color between the plugs and yellow glaze and/or medium grey to black is bad.
Reply With Quote
  #44  
Old 03-03-2012, 08:10 PM
drivinfaster's Avatar
drivinfaster drivinfaster is online now
bimmerfest Supporting Member
Location: in the sticks you piney
 
Join Date: Nov 2007
Posts: 10,925
Mein Auto: rescued bmw's
apparently m3's do have an adjustment procedure that is due @ 60k. if it hasn't been done that i would do that.

as for failing after an oil change, what were the readings??

depending upon the new readings, there may be a few different things to do.

does the test also show co2 and o2?? if so, please list them as well.



df
__________________
Reply With Quote
  #45  
Old 03-03-2012, 09:09 PM
Gooby's Avatar
Gooby Gooby is offline
Sexy Sax Man / Kebab Lord
Location: Streetz of B'
 
Join Date: Mar 2009
Posts: 6,521
Mein Auto: 1995 M3
lol I'm getting schooled in this thread...

I should stop acting smart... lolol
__________________

Instagram | @randytheus
Reply With Quote
  #46  
Old 03-03-2012, 09:19 PM
rderow rderow is offline
Registered User
Location: mahattan beach ca
 
Join Date: Apr 2011
Posts: 12
Mein Auto: m3 convert smg e46 2002
After oil numbers were back to where they were from the first smogging.... I am going to try find a reasonable and experienced mechanic to do the valve adjustment. I replaced the plugs about 8k miles ago and no codes or anything have been thrown but will get them to check when they do the adjustment.
Reply With Quote
  #47  
Old 03-03-2012, 09:20 PM
rderow rderow is offline
Registered User
Location: mahattan beach ca
 
Join Date: Apr 2011
Posts: 12
Mein Auto: m3 convert smg e46 2002
I will share o2 when I can grab the sheet but it has passed every time.
Reply With Quote
  #48  
Old 03-03-2012, 09:31 PM
crisscross's Avatar
crisscross crisscross is offline
Just living MY dream
Location: Best country on Earth
 
Join Date: Mar 2009
Posts: 5,585
Mein Auto: 1995 M3 Boston Green
Quote:
Originally Posted by KaptinKP View Post
lol I'm getting schooled in this thread...

I should stop acting smart... lolol
__________________
-Alan


Member #2 of the Boston Green Mafia BMW-CCA #457574

1995 BG M3(sold) 2000 TiAg 4.4l X5(sold)

-2000 F250 V10
-2004 GMC Yukon Denali

-I do the things today that others won't do, so I will have the things tomorrow that other won't have....
Reply With Quote
  #49  
Old 03-04-2012, 10:27 AM
drivinfaster's Avatar
drivinfaster drivinfaster is online now
bimmerfest Supporting Member
Location: in the sticks you piney
 
Join Date: Nov 2007
Posts: 10,925
Mein Auto: rescued bmw's
Quote:
Originally Posted by rderow View Post
I will share o2 when I can grab the sheet but it has passed every time.
it's not a pass of fail gas, neither is co2. they are, however, very good indicators of what else is going on with the combustion.

for instance, if the o2 coming out of the exhaust is too high, that could indicate the cat is not working properly, even though no cade has been thrown.

the lower the co2 the less efficient the engine is running, which could point to other indicators, or, conversely, indicate the engine is operating at peak efficiency and (as a result) able to properly control NOx.

it's stuff you learn in emissions classes. lots and lots of classes.




df
__________________
Reply With Quote
  #50  
Old 03-04-2012, 10:45 AM
granlund granlund is offline
Officially Welcomed to the 'Fest
Location: Dayton, OH
 
Join Date: Jan 2011
Posts: 553
Mein Auto: -02 530 & -92 325is
If there is lash on the intake lifters, it could adversely affect the valve overlap and therefore internal EGR, right. This could account for the elevated NOx since EGR is done to lower the combustion temperature.
Reply With Quote
Reply

Bookmarks

Tags
:3


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)
Today's Posts Search
Thread Tools
Display Modes

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 On



Forum Jump


All times are GMT -7. The time now is 06:05 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms