Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

 
 
LinkBack Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 03-30-2004, 11:40 AM
Registered User
 
Join Date: Feb 2002
Location: South Eastern, MA
Posts: 1,743
Question Questions After Smogging Car.......

Yesterday I brought my car (92 500E / M119) over to have it smogged, it passed without a problem but a couple of things cought my eye and I'd like to get a techs opinion.

I was comparing the results of this smog and my last smog a couple of years ago and I noticed a significant increase in the amount of HC's (Hyddrocarbons) especially at idle (643RPM). I also noted that my idle was lower than the last time I had it checked (667RPM). Are the two related? I want to keep the car at it's peak so knowing what the cause is would be helpful. Anyone have any ideas or suggestions where to look? I assume a higher HC amount means it's running rich?

Some history: The spark plugs are relatively new (4000 miles) and the oil was changed recently. The gas tank does have Techron to clean up the injectors and fuel system, can this be a possible source? The caps/rotors have not been changed and the car has had about 10K miles added since the last smog. The caps/rotors were changed at 44K, car has nearly 66K, is this a possible cause? O2 sensors are the same and I haven't done much else other than strict maintenance.

Is it possibly my idle control valve is worn?

Is it possible that using two different test stations can results in these kinds of measurement differences?

Any help would be appreciated.
__________________
Afshin

Current:
02 C32 AMG

Previous:
92 500E
84 190E 2.3 5 Spd

Last edited by placo1; 03-30-2004 at 11:48 AM.
Reply With Quote
 

Bookmarks


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
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 07:47 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page