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 > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 12-23-2009, 01:09 PM
Registered User
 
Join Date: Dec 2009
Posts: 12
Problem with my 1998 E300 Turbodiesel *video

I hate for my first post to be one asking for help, but I just recently found this forum and it seems like its full of very knowledgeable people. I’m having a bit of trouble with my 1998 E300 and I was hoping someone might be able to point me in the right direction.

About two weeks ago I went to start the car in the morning and after letting the glow plugs prime I turned the ignition over. The car started like normal, but immediately began to idle horribly and vibrate the car. At that time the glow plug light lit back up and the Check Engine light came on. I had the glow plugs and relay replaced with OEM parts.

After getting the car back I started it again and it’s still running awful and there is a faint white smoke that comes from the exhaust. There is no check engine light and no glow plug light on. After 5-10 minutes of driving the vehicle runs and idles fine. There is still a little black smoke under acceleration and it may be my imagination, but I feel like I'm down on power. I’ve done a lot of reading and my research has pointed me to two possible problems:

1) Air in the fuel lines
2) A bad injector (or two, LoL)

I’ve posted a link to a video of the vehicle on startup for anyone that doesn’t mind to watch it. I’m sorry for the horrible quality; I had to shoot it on my phone because my wife misplaced the charger for our digital camera. Also, I took a picture of my clear fuel lines and have that posted below as well because there appeared to be some air in it:

Vid:

http://www.youtube.com/watch?v=8QjU97WVBu8

Pic:



Thanks for any help! I just hate to start throwing money at the car and potentially still have an issue.

Andrew

Reply With Quote
  #2  
Old 12-23-2009, 01:14 PM
Registered User
 
Join Date: Oct 2005
Posts: 4,263
I didn't watch the video (heeding your warning) but in the still image, if your engine is not running, that air bubble is of no concern. Watch for bubbles running around the fuel pipes with the engine running - those are of concern.
Reply With Quote
  #3  
Old 12-23-2009, 01:16 PM
Registered User
 
Join Date: Dec 2009
Posts: 12
The video is not that bad, I just had to shoot it with my iphone instead of a real camera. Thanks for the input though!
Reply With Quote
  #4  
Old 12-23-2009, 01:30 PM
A work in process...
 
Join Date: Oct 2009
Location: Texas
Posts: 985
I heard a kind of pop pop splutting? sound at idle. Sounds like it might benefit from a diesel purge or injector cleaning.

Overall, the engine sounds pretty healthy to me.
__________________
Codifex
1981 240D ChinaBlue (Got her running with a donor engine.)
1983 300DTurbo w/sunroof.
1984 300TD manual sunroof. (Electrical Gremlins)
Reply With Quote
  #5  
Old 12-23-2009, 01:54 PM
KarTek's Avatar
<- Ryuko of Kill La Kill
 
Join Date: Jun 2007
Location: Bahama/Eno Twp, NC
Posts: 3,258
These cars run like hell with even one GP dead. It sounds like you have at least one bad one. It's probably passing enough current to not trip the CEL but not enough to actually heat up.

1. Pull the 6 conductor plug onthe GP relay, switch on the ignition and check for 12v on all 6 pins on the relay.

2. After passing this test, switch you meter to Ohms and test between ground and each pin on the plug going to the GP's. They should all be about the same, something like .8 ohm.
__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250
Reply With Quote
  #6  
Old 12-23-2009, 03:49 PM
Registered User
 
Join Date: Dec 2009
Posts: 12
Quote:
Originally Posted by KarTek View Post
These cars run like hell with even one GP dead. It sounds like you have at least one bad one. It's probably passing enough current to not trip the CEL but not enough to actually heat up.

1. Pull the 6 conductor plug onthe GP relay, switch on the ignition and check for 12v on all 6 pins on the relay.

2. After passing this test, switch you meter to Ohms and test between ground and each pin on the plug going to the GP's. They should all be about the same, something like .8 ohm.

I skipped straight to step #2 because I had a hunch and you were dead on the money. Every wire other than #5 is reading dead on 6ohms. That one is not bringing a reading at all. Correct me if I'm wrong, but that means the intake manifold is going to have to come off the car again isn't it? Shouldn't a shop check something that simple before putting the car back together?
Reply With Quote
  #7  
Old 12-23-2009, 04:43 PM
compress ignite's Avatar
Drone aspiring to Serfdom
 
Join Date: Feb 2004
Location: 32(degrees) North by 81(degrees) West
Posts: 5,554
IF the wire for that GP tests out good...

"They" probably gave you a bad glow plug
(Nothing Deliberate,unless they snapped it off changing it out...)

I'd still drop back and test all the Pins for 12 Volts @ the GP Relay as KarTek suggested, First.
__________________
'84 300SD sold
124.128
Reply With Quote
  #8  
Old 12-23-2009, 04:48 PM
Registered User
 
Join Date: Nov 2005
Location: Cross Roads, PA
Posts: 324
Quite frankly, if they used MB parts they are guaranteed for 12 months. The servicer should pickup the cost of replacing the bad glowplug.
__________________
Dennis
2006 E320 CDI Black/Black Leather. Nav, HTD Seats HK stereo 32000 miles.
2000 VW Passat 1.8t 300,000 miles as of Dec 09, 2009 original owner
1997 E300d Silver 300,000 miles As of Jan 05, 2010
3rd owner SOLD
Reply With Quote
  #9  
Old 12-23-2009, 04:58 PM
Hatterasguy's Avatar
Zero
 
Join Date: Nov 2002
Location: Milford, CT
Posts: 19,306
Sounds like a bad glowplug, and the air in the lines isn't a good sign either.

Those plastic lines suck, and need to be replaced more often than they should. I'd replace those, you shouldn't see any air.
__________________
2017 Chevy Silverado 1500 LTZ
2007 Tiara 3200

"No free man shall ever be debarred the use of arms. The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government."
-Thomas Jefferson
Reply With Quote
  #10  
Old 12-23-2009, 05:06 PM
Registered User
 
Join Date: Dec 2009
Posts: 12
Quote:
Originally Posted by compress ignite View Post
"They" probably gave you a bad glow plug
(Nothing Deliberate,unless they snapped it off changing it out...)

I'd still drop back and test all the Pins for 12 Volts @ the GP Relay as KarTek suggested, First.

After further inspection it appears "they" did not secure the wire to the end of the plug on the #5 plug. Two coat hangers, three pours or crown royal, and a few curse words later I think I have the wire secured to the glow plug. Those things are awful to get to with the intake manifold on the car. As soon as I finish drying my air filter and re-installing I'll know for sure if it's fixed, but it does test out now.

Thanks for the help guys. I'll keep you posted.
Reply With Quote
  #11  
Old 12-23-2009, 07:27 PM
Registered User
 
Join Date: Dec 2009
Posts: 12
Well, that seems to have done it. I threw the filter back in for a quick test and it fired right up and ran smooth. I think I may still do a diesel purge though.

Thanks again for all of the help guys. This just provides further support for my theory that I shouldn't let other people work on my cars.
Reply With Quote
  #12  
Old 12-23-2009, 07:46 PM
Registered User
 
Join Date: Oct 2005
Posts: 4,263
Good theory. It is too bad that in practice, it cannot be universally applied.

How many hours of work did you pay for, and how many hours of your own work did it lead you into?
Reply With Quote
  #13  
Old 12-24-2009, 01:32 AM
Registered User
 
Join Date: Dec 2009
Posts: 12
Quote:
Originally Posted by Matt L View Post
Good theory. It is too bad that in practice, it cannot be universally applied.

How many hours of work did you pay for, and how many hours of your own work did it lead you into?
I paid for approx. 5 hrs of labor. I spent a dedicated hour. I usually don't let other people work on my cars; however, this is the first diesel I've worked on, my wife's X5 35d is under full warranty. I can assure you that I won't make the same mistake again. After spending some time on this forum, it appears that about anything short of a rebuild isn't much harder than a gasser :thumbs:
Reply With Quote
  #14  
Old 12-24-2009, 07:18 AM
KarTek's Avatar
<- Ryuko of Kill La Kill
 
Join Date: Jun 2007
Location: Bahama/Eno Twp, NC
Posts: 3,258
I was intimidated by the car when I first got it 2.5 years ago. Since then, I've gotten an excellent education from the members here and from internet research.

Even the electronics are kind of primitive since it doesn't have to do the monitoring and adjusting of injection like a CDI or a gas engine.

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250
Reply With Quote
Reply

Bookmarks

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
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 03:12 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page