Parts Catalog Accessories Catalog Tech Info Tech Forums
  Search our site:    
 Cart  | Project List | Order Status | Help    

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 04-10-2002, 04:44 AM
spwilliams's Avatar
Registered User
Join Date: Apr 2002
Posts: 27
Unhappy Smoking 1989 420 SEL


I am the proud owner of a 1989 420 SEL with 104k on the clock. I have recently noticed a disturbing condition on my car. It has happened on only two occasions so far. Here are the symptoms:

1 - A huge cloud of smoke from the tailpipe when car was gunned from a standing start.

2 - While sitting at idle at a light, suddenly smoke cloud envelops the car. The car seemed to run a little rough just prior to the smoke cloud. Lasted for about 20 seconds or so, then cleared up.

Car does not seem to smoke in general when accelerating.

Car seems to use a little oil, but I have not had long enough to really tell. (about 3 weeks and I have put about 1000 miles on it)

Any ideas? Do I have a major problem here?

Reply With Quote
Old 04-10-2002, 05:05 AM
Ashman's Avatar
Service Advisor
Join Date: Sep 2000
Location: Sherman Oaks, CA
Posts: 4,748
What color is the smoke?

White? Blueish? Black?

'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.
Reply With Quote
Old 04-10-2002, 05:28 AM
spwilliams's Avatar
Registered User
Join Date: Apr 2002
Posts: 27
Smoking 420 - COlor of Smoke

It seems to be a blueish grey - not white or black.
Reply With Quote
Old 04-10-2002, 07:56 AM
Matt Crooke
Posts: n/a
Head Gasket, get it checked asap. Check your expansion tank to see if the water is discoloured in any way.
Reply With Quote
Old 04-10-2002, 04:17 PM
sixto's Avatar
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 18,745
Could be as simple as valve seals. As has been said, have it checked ASAP.

91 300SE
87 300SDL
81 300SD (on ebay)
Reply With Quote
Old 04-13-2002, 01:20 AM
Senior Member
Join Date: Jun 2001
Location: Northern Calif. (Fairfield Area)
Posts: 2,225
Valve seals and or guides are usually associated with high oil consumption but no smoke. Head gasket problems produce white smoke which is steam and higher temp guage readings. This condition can be easilly checked by sniffing the coolant for hydrocarbons with an infrared detector. I suspect you may have an injector wigging out causing a cylinder wash or a cam oiler tube coming loose.You may even have a computer going South. I hate intermittents.

Good luck,
Auto Zentral Ltd.
Reply With Quote
Old 04-13-2002, 08:39 PM
Posts: n/a
Could be a faulty transmission vacum modulator, but burning trans fluid will result in white smoke from my experience. Just a thought...
Reply With Quote


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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Wanted: 1989 420 SEL Thrust washers, Pucks, HLC compensating elements Cigar Havana Mercedes Used Parts For Sale & Wanted 0 05-23-2004 05:11 PM
How to rebuild Air Pump - 1989 420 SEL Cigar Havana Tech Help 3 02-16-2004 12:43 AM
Help! Euro Headlight Vacuum - 1989 420 SEL Cigar Havana Tech Help 6 01-16-2004 10:16 AM
Do I Need a New Fuel Distributor - 1989 420 SEL Cigar Havana Tech Help 10 01-06-2004 11:25 AM
Euro Lights Vacuum Diagram for 1989 420 SEL Cigar Havana Tech Help 0 12-16-2003 11:42 AM

All times are GMT -4. The time now is 02:50 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page