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 11-25-2014, 12:55 PM
Registered User
 
Join Date: Oct 2014
Posts: 32
Change delivery Valve seals, now knocking

300 SDL was leaking at the delivery valve seals. I changed the first two towards the front of the car and it started up great and ran better then ever, I moved to the two middle ones where they were leaking and now after i tried to start it took me about 15-20 tries, and now the car was knocking very very bad. Did i get a piece of dirt in the fuel? Any ideas? Whats the next step from here? Tried to go for a drive and it doesn't produce much power. Also gong on a road trip to florida tomorrow!


EDIT: So the 4th delivery valve from the front was dry when i took the fuel line off, i took the valve out cleaned it up and put it back in, ran brake cleaner and starting fluid through the fuel line going into the manifold and it ran through fine. I tightened it up and i cracked the 4th fuel line to the manifold and theres no fuel coming out...any ideas?


Last edited by Base1375; 11-25-2014 at 01:49 PM.
Reply With Quote
  #2  
Old 11-25-2014, 03:46 PM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 50,968
If it is just nailing a little people have reported this happeing after changing the Seals and it usually goes away after a few hundred Miles.


If it is really knocking loud and you are sure all of the Air is out of the system a few People have manged to pull up the Barrel part of the Element and get it a bove and out of the slot and have torqued the Delivery Valve holders like that.

For mor info: DIY Links by Parts Category - PeachParts Mercedes ShopForum
__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote
  #3  
Old 11-25-2014, 04:20 PM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 50,968
[QUOTE=Base1375;3412340]300 SDL was leaking at the delivery valve seals. I changed the first two towards the front of the car and it started up great and ran better then ever, I moved to the two middle ones where they were leaking and now after i tried to start it took me about 15-20 tries, and now the car was knocking very very bad. Did i get a piece of dirt in the fuel? Any ideas? Whats the next step from here? Tried to go for a drive and it doesn't produce much power. Also gong on a road trip to florida tomorrow!


EDIT: So the 4th delivery valve from the front was dry when i took the fuel line off, i took the valve out cleaned it up and put it back in, ran brake cleaner and starting fluid through the fuel line going into the manifold and it ran through fine. I tightened it up and i cracked the 4th fuel line to the manifold and theres no fuel coming out...any ideas?[/QUOTE]

This makes it sound like one of the Element Barrels got pulled up and out of the alignment slot and over the Pin in the Housing. The seems to happen 2-3 times a year when People do the same job.
__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote
  #4  
Old 11-25-2014, 04:39 PM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 50,968
I think there is pictures in this one:
Replaced delivery valve seals and..... W124 300D
Concerning the above Thread. When the side Cover is removed at the top of the area where the Gasket Seals you can see the Barrel Alighment Pins and the Holes and where the Metal has been staked over to keep the Pins from moving out. Sometimes if the Element Barrel has not been lined up with the Slot when the Delivery Valve holder is tightened that pin gest pushed out past the staked area.
If that happend you can see that that Pin is not as deep inside the hole as the rest of the Pins.

Worst cases. The Pin gets bent or the Housing cracks.


OM606. 910 possible delivery valve issue

post #10
1987 300d injection pump issue
__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote
  #5  
Old 11-25-2014, 04:45 PM
compu_85's Avatar
Cruisin on Electric Ave.
 
Join Date: May 2008
Location: La Conner, WA
Posts: 5,234
FWIW when I changed my DV seals the motor knocked and clacked for almost 500 miles. As I drove it more it slowly got better and better.

-J
__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.
Reply With Quote
  #6  
Old 11-25-2014, 04:52 PM
Registered User
 
Join Date: Aug 2012
Location: Central Ohio
Posts: 105
Quote:
Originally Posted by compu_85 View Post
FWIW when I changed my DV seals the motor knocked and clacked for almost 500 miles. As I drove it more it slowly got better and better.

-J
X2- I've done two sets of om603 DV seals this year and each time the engine sounded bad- nailing like it had really work injector nozzles- the noise worked itself out in time. A quick Italian tune up seemed to speed the process (foot to floor, repeated as necessary or as many times as you want)
Reply With Quote
  #7  
Old 11-25-2014, 09:56 PM
Lucas's Avatar
Registered User
 
Join Date: Sep 2014
Location: Santa Barbara, CA
Posts: 1,204
Been there. On an isuzu I ended up rotating the barrel slightly and off a tooth. Basically running rich. Could have burnt the piston but I heard the knocking.

I asked my IP guy to change my seals, and said I'm ready to try again.

A little nervous.

Sounds like this IP might be different though.

I need to learn more about these.
Reply With Quote
  #8  
Old 11-26-2014, 12:10 PM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 50,968
When I used to work rebuilding Fuel Injection Pumps the 2 things I did to make sure the Barrels were installed in the Housing properly was after the Barrels were all in to look and see if they were all installed at the same depth.

Next after the Delivery Valves and Springs were inside was to run the Delivery Valve Holders down as far as they would go by Hand and then look or put a Straight Edge across the top of them to see if all of the Delivery Valve Holders were at the same Height.
I never torqued the Delivery Valve Holders without knowing they were all at the same height.

The above works because it is extremely unlikely that you are going to get all of the Barrels installed wrong.

__________________
84 300D, 82 Volvo 244Gl Diesel
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 02:29 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, 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