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 08-27-2008, 10:02 PM
smacmoyle's Avatar
Registered User
 
Join Date: Aug 2008
Posts: 61
1998 E300 suspect its glow plug time

I just bought a 98 E300. I put over 2500 miles on it already. I love it. It just started giving me trouble starting. If I wait longer before cranking it helps. I suspect it needs new plugs. It looks like the intake manifold needs to come off. I havnt got any books yet for it but can anyone tell me if manifold removal is straight forward or are the things I need to know ? Is glow plug removal as simple as it seems also ? I own and work on a Nissan SD33 diesel (for sale) and a 6.2 Chevy diesel but this is my first Mercedes so I would be gratefull for any tips

Scott
Reply With Quote
  #2  
Old 08-27-2008, 10:13 PM
Registered User
 
Join Date: Feb 2004
Location: Walnut Creek, CA & 1,150 miles S of Key West
Posts: 4,874
Search "606 + siezed glow plug" and variants first..... search lots, learn lots, be careful and go slow.

There is a DIY above that describes the removal of the IM and an "uneventful" GP change.

If you've got a bad GP or relay it ought to light up the GP light.

If it is simply more difficult to start, it is more than likely a fuel/air leak.

Define which.

*edit* It would be helpful if you spelled it correctly first "SEIZED".
__________________
Terry Allison
N. Calif. & S. of Key West

09' E320 Bluetec 77k

Last edited by TMAllison; 08-27-2008 at 10:23 PM.
Reply With Quote
  #3  
Old 08-27-2008, 11:25 PM
smacmoyle's Avatar
Registered User
 
Join Date: Aug 2008
Posts: 61
Thanks, will do. It is just simply harder to start. Air could well be the problem. will you get a glow plug light if a couple of plugs are inop ?
Reply With Quote
  #4  
Old 08-27-2008, 11:41 PM
Registered User
 
Join Date: Feb 2004
Location: Walnut Creek, CA & 1,150 miles S of Key West
Posts: 4,874
sounds like you have an air leak.

Look at the clear palstic fuel lines while its running with a bright light and look for bubbles. Even lil ones.

The trick is to identify in which line they first appear.

The fuel path is as follows: from tank into fuel thermo in the cly head, then to top of pre-filter, out bottom of pre-filter to shutoff valve (SOV), out bottom of SOV to end of lift pump, out lift pump to main filter, out main filter to SOV and finally into IP. Detail http://www.detali.ru/cat/oem_mb2.asp?TP=1&F=210025&M=606%2E962&GA=722%2E608&CT=M&cat=19T&SID=07&SGR=120&SGN=04

Find which line has air and then look at the seal(S) prior to that point. Usually is prior to fuel exiting the lift pump as it is suction to that point. Check the Delivery valve seals on top of the IP too.

Each line is sealed with an oring. Sizes are here OM606.962 o-ring size or buy "viton" orings from fryerpower.com.

The white horseshoe clips on the ends of the fuel lines are spreaders; push them tightly closed for removal, loosen them to seal.
__________________
Terry Allison
N. Calif. & S. of Key West

09' E320 Bluetec 77k
Reply With Quote
  #5  
Old 08-28-2008, 01:40 AM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 26,034
You should be able to check your glow plugs with an Ohmmeter without having to remove anything but the connector that goes to the Glow Plug wires at the. (The Diesel Giant site has a trouble shooting pictorial for 617 engines but enough of it is close enough to be helpful.)


Your Glow Plug Relay may look different but the connector on the left of the pic is for the Glow Plug Wires and they are numbered per cylinder.
__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote
  #6  
Old 08-28-2008, 08:56 AM
notfarnow's Avatar
confused, scratching head
 
Join Date: Nov 2007
Location: Saint John, NB
Posts: 309
You can even use a test light between a 12v + source and the GP. If the GP is completely dead, you won't get a ground off of it.
__________________
Jake
1999 e300d PlantDrive WVO/SVO conversion
**note to self: oil changed at 268k kms**
1990 Toyota 4Runner FrankenDiesel swap
Reply With Quote
  #7  
Old 08-28-2008, 02:05 PM
Registered User
 
Join Date: May 2007
Posts: 816
Quote:
Originally Posted by smacmoyle View Post
I just bought a 98 E300. I put over 2500 miles on it already. I love it. It just started giving me trouble starting. If I wait longer before cranking it helps. I suspect it needs new plugs. It looks like the intake manifold needs to come off. I havnt got any books yet for it but can anyone tell me if manifold removal is straight forward or are the things I need to know ? Is glow plug removal as simple as it seems also ? I own and work on a Nissan SD33 diesel (for sale) and a 6.2 Chevy diesel but this is my first Mercedes so I would be gratefull for any tips

Scott
I have a 96 non turbo model, but once you get to the glow plugs, as mentioned, take your time and be patient. When I did mine, every one of them was carbon bound, and I ended up using about 3 cans of PB Blaster, and a product called Freeze-Off, both of which can be obtained at most auto supply stores. The other thing to get a six sided socket rather than a 12. This seems to get a better grip on the plug without rounding it off. I would suggest spraying down the plugs the night before you plan to do the job, and then use a torque wrench to try and get them out. The shearing point of the plugs are in the neighborhood of 45 N/M, and the torque wrench will enable you to stay within that limit. Some posters have advised warming up the engine before you attempt to remove the plugs, but that is up to you. Prior to installing the new plugs, it is best to get yourself the proper reamer to ream out the holes to insure that most of the carbon is removed.
__________________
96 E300d
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 07:42 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