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 08-04-2001, 11:05 AM
CJ CJ is offline
Registered User
 
Join Date: Jun 2000
Location: Earth
Posts: 1,318
Decarbonizing a diesel

How exactly do you decarbonize a diesel engine? I have heard of using the motor-vac, but want to know if there are any products like X-66. and how specifically ti use it.
Reply With Quote
  #2  
Old 08-04-2001, 01:45 PM
Registered User
 
Join Date: Jun 2001
Location: Omaha, NE
Posts: 962
Have you tried a good, old-fashioned Italian Tune-Up? No ethnic slur intended -- that's just what the procedure is called, from my vast (or at least half-vast) research on this and other lists. My friends with diesels routinely take them out to a hilly area and have them spend as much time at "WOT" (wide-open throttle), pulling up a long, steep hill, as possible, which seems to do a fine job of cleaning the carbon out of the prechambers. To work, really has to be an extended (i.e., several minute) run, not just the typical 10-second flooring the pedal to pass someone while going up a small hill routine. Obviously, works best if you live in an area with some serious hills . . .
__________________
Steve
'93 400E
Reply With Quote
  #3  
Old 08-04-2001, 04:43 PM
CJ CJ is offline
Registered User
 
Join Date: Jun 2000
Location: Earth
Posts: 1,318
I do the italian tune-up on an often basis, but i am looking to do something a bit more.
Reply With Quote
  #4  
Old 08-04-2001, 05:11 PM
Registered User
 
Join Date: Jun 2001
Location: Omaha, NE
Posts: 962
In terms of additives, I would stick with Techron. It has been approved, at least in the past, by MB for use in gasoline and diesel engines. Just follow instructions on the bottle to the letter (add to nearly empty tank, add up to 12 gal fuel, etc.) Make sure you buy straight Techron, not "xxx with Techron" which comes in similar-looking black plastic bottles.
__________________
Steve
'93 400E
Reply With Quote
  #5  
Old 08-04-2001, 08:03 PM
CJ CJ is offline
Registered User
 
Join Date: Jun 2000
Location: Earth
Posts: 1,318
I am going to buy a bottle of techron when my tank empties out, but I am still wondering if there are any other ways to decarbonzie and engine aside from taking it apart or adding a cleanser to the tank.
Reply With Quote
  #6  
Old 08-04-2001, 08:33 PM
longston's Avatar
Another View. . .
 
Join Date: Dec 2000
Location: Mark West, CA
Posts: 787
So, What's Up?

Didn't you read or believe any of the links and information I gave you on the X-66 Thread? I put a lot of time into trying to give you all of the options I knew of...

Simple answer, Lubro-Moly Diesel Purge:



Or Lubro-Moly Proline:



Have you had a mechanic tell you that you need to decarbonize your engine, or do you have symptoms that indicate that decarbonizing is in order?

If you're not already using Redline DFC/85+, I would do the full bottle clean-up and start using it. My '82 300SD has been fed this stuff for 10 years, and runs great with no smoke, and great performance...



You can get all of this stuff from PartsShop...
__________________
"We drive into the future using only our rearview mirror."
- Marshall McLuhan -

Scott Longston
Northern California Wine Country...
"Turbos whistle, grapes wine..."
Reply With Quote
  #7  
Old 08-04-2001, 09:37 PM
CJ CJ is offline
Registered User
 
Join Date: Jun 2000
Location: Earth
Posts: 1,318
Sorry,
I did read the post. I forgot to tell you that I have used diesel purge. Does diesel purge clean everything, I thought it was just to clean the injectors.
Reply With Quote
  #8  
Old 08-04-2001, 10:12 PM
longston's Avatar
Another View. . .
 
Join Date: Dec 2000
Location: Mark West, CA
Posts: 787
Red face Also Sorry...

If I was harsh at all. Diesel Purge is about the best I know of. The manufacturer describes it as follows:

DIESEL-SPÜLUNG (RINSING, or PURGE)
Diesel-Spülung removes deposits from injectors and in the piston-combustion chamber areas. Does away with engine running problems - perfectly suited also for preventive use. No more "nailing" at part load, smooth idling, elastic engine feel. Due to clean injector tips optimum engine operation is achieved. Cleans the entire fuel system. Protects against corrosion. Allows for optimum combustion and enhances the economy and operating reliability.


I don't really know of, nor can I find anything like X-66 for a diesel engine aside from the products I listed on the other thread, like the Stanadyne, or the Techron Fuel System Cleaner.

Ask at some commercial diesel engine shops in your area if they know of anything, and let us know...
__________________
"We drive into the future using only our rearview mirror."
- Marshall McLuhan -

Scott Longston
Northern California Wine Country...
"Turbos whistle, grapes wine..."
Reply With Quote
  #9  
Old 08-05-2001, 08:05 AM
engatwork's Avatar
busy
 
Join Date: May 2000
Location: Soperton, Ga. USA
Posts: 12,200
I recently ran some Diesel Purge through my 300D and I'll swear that stuff looked and smelled exactly like Stanadyne. I could not tell the difference between the way it ran before and after the Diesel Purge. I have been running the correct amount of Stanadyne on ever fill up since purchasing the car earlier this year and it runs great and gets a solid 25 mpg in combined city/highway driving.
__________________
Jim
Reply With Quote
  #10  
Old 08-05-2001, 04:09 PM
240Joe's Avatar
Registered User
 
Join Date: Nov 2000
Posts: 525
engatwork

Is there a convenient place to find stanadyne. I've been using the power service stuff from Walmart, but I've heard that farmers have been using stanadyne for a long time in their John Deere tractors.

Joe
Reply With Quote
  #11  
Old 08-05-2001, 07:10 PM
longston's Avatar
Another View. . .
 
Join Date: Dec 2000
Location: Mark West, CA
Posts: 787
Joe,

You can call local diesel fuel pump and injector shops in your area. Stanadyne is usually available through them. Or, call Phil at PartsShop and ask him if he can get it for you.

Otherwise, here's a link to their dealer locator:

www.stanadyne.com/dsg/dsg_power_contacts.asp

But I still think the Redline product is the best...
__________________
"We drive into the future using only our rearview mirror."
- Marshall McLuhan -

Scott Longston
Northern California Wine Country...
"Turbos whistle, grapes wine..."
Reply With Quote
  #12  
Old 08-06-2001, 07:38 AM
LarryBible
Guest
 
Posts: n/a
On a diesel, decarbonization, just like most other things about a diesel as compared to a gas engine, is a totally different situation.

To start with, technically there is no such thing as "carbon" in a diesel. Diesel fuel is basically a light oil. The byproduct of combustion in a diesel is soot rather than carbon as in a diesel engine. One reason a diesel lasts longer is that this soot is not a mild abrasive, as is carbon.

Secondly, when using additives, you are only putting these additives through the injection pump, injectors, combustion chambers and exhaust. Many gas engines with injection are similar, but the additive also flows over the intake valve, which is where much of the carbonization degrades air/fuel flow capability.

In many MB diesels, especially in their twilight miles, build up a black goo in the intake manifold. Since only air flows through the intake manifold, the additive will do very little, if anything to remedy this problem.

The only remedy that I know of is removal and cleaning of the intake manifold. Cleaning the manifold is a slow, nasty job. You might take it to an automotive machine shop for cleaning in their jet wash, or if they have a vat of some sort that is usable on aluminum parts, that may be an alternative.

Hope this information is useful.

Have a great day,
Reply With Quote
  #13  
Old 01-08-2003, 02:41 PM
Registered User
 
Join Date: Nov 2002
Location: CT
Posts: 325
Larry .. re carbonization

I'm in the process of changing out my glow plugs
in my 1996 E300D ( ~90,000 miles ) which on this
model requires the removal of the intake manifold ..
and guess what ?? Gobs of black goo as you just
described .. This stuff is a real mess .. I could
try and vacuum some of it up .. I don't want to have
any 'break off' and get into the engine itself ..
Do you know of any solvents that will suspend this stuff
without hurting the metal ?? I don't see how the "Italian
Tune-up" could solve this issue .. BTW what's the source
of this 'goo' in the first place ??

Jim in Ct ..

Last edited by Triffin; 01-08-2003 at 05:48 PM.
Reply With Quote
  #14  
Old 01-08-2003, 07:47 PM
Registered User
 
Join Date: Aug 2001
Location: Milford, DE
Posts: 1,438
CJ

I'm surprised that TL_1 (or was it TL_J???) will not solve this problem.......

How do you know when your car need to be "decarbonized"??

If your car gets 42MPG at 176K and does not use any oil I think maybe I need to find some carbon to put in my 91 300D 2.5.

Tim
Reply With Quote
  #15  
Old 01-09-2003, 01:42 AM
Registered User
 
Join Date: Jan 2003
Location: evergreen co
Posts: 25
cleaner

I had my intake manifold of car and soaked in commercial parts solvent for hours. Took it out of parts washer- goo hardly affected. tried "desolvit" strong citrus based cleaner found at walmart-amazing-goo was disolved just as quick as if I had sprayed on brake clean. I finished cleaning the rest of the parts by using desolvit. Other citrus cleaners I have used are not at all as sssseffective as this one.
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Diesel exhaust... good or bad for you? JHZR2 Diesel Discussion 15 07-31-2005 09:16 AM
my diesel purge experience JHZR2 Diesel Discussion 19 07-08-2005 11:12 PM
V6 mb diesel fahrgewehr2 Diesel Discussion 16 12-19-2004 01:42 PM
Diesel Gods, Please Help --buying a diesel - long post, sorry BenzMatic Diesel Discussion 12 09-28-2004 12:27 AM
Why a Diesel? KevinM Diesel Discussion 26 12-12-2001 10:38 PM



All times are GMT -4. The time now is 01:42 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