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 06-18-2016, 11:36 PM
Registered User
 
Join Date: May 2016
Posts: 7
Angry Rusty fuel in delivery valve om602 2.5 N/A

Hello,

I have been pulling injectors and replacing nozzles on my OM602. I noticed corrosion buildup inside of some of the injector delivery grooves. The delivery valve #2has orange fuel in it when I pulled the line off. Do I have water in the pump? The pump leaks oil. Thats for sure. It drips after every time I park. Diesel purge was done beforehand with two bottles. And filters were changed. Any know-how? I am tempted to pull the pump and reseal it before new nozzles get to run in the block. I appreciate anyone sharing their experience on this topic.

Reply With Quote
  #2  
Old 06-18-2016, 11:44 PM
Diseasel300's Avatar
Registered User
 
Join Date: May 2016
Posts: 6,025
Rust can only come from water or moisture, you pretty well answered your own question. At a minimum you should drain some fuel out of the tank (water settles to the bottom) and replace your secondary (canister) fuel filter since water will collect in it.
Reply With Quote
  #3  
Old 06-18-2016, 11:52 PM
Registered User
 
Join Date: May 2016
Posts: 7
Quote:
Originally Posted by Diseasel300 View Post
Rust can only come from water or moisture, you pretty well answered your own question. At a minimum you should drain some fuel out of the tank (water settles to the bottom) and replace your secondary (canister) fuel filter since water will collect in it.
Thanks. It only makes sense. I have a spare tank. Ill be swapping that then as well. Gosh gotta keep on fixing stuff. It'll be worth it....I trust MB.
Reply With Quote
  #4  
Old 06-18-2016, 11:55 PM
Registered User
 
Join Date: May 2016
Posts: 7
But how the heck will the water get in there? I'd like to find and fix the root cause.
Reply With Quote
  #5  
Old 06-19-2016, 01:04 AM
Registered Hack
 
Join Date: Mar 2008
Posts: 4,642
unlikely that you have that much water and oxygen in that spot during operation if your engine runs decently.

I have noticed this numerous time. The rust comes from between the threads of the delivery valve holder.

when you remove it, you break it all up into finer particles and it falls into that region around the delivery valve.

It is important to flush it out.



take a look at the threads of the holder and the female threads in the pump, you wil traces of rust there.
__________________

Reply With Quote
  #6  
Old 06-19-2016, 10:12 AM
Registered User
 
Join Date: May 2016
Posts: 7
Smile

Quote:
Originally Posted by jt20 View Post
unlikely that you have that much water and oxygen in that spot during operation if your engine runs decently.

I have noticed this numerous time. The rust comes from between the threads of the delivery valve holder.

when you remove it, you break it all up into finer particles and it falls into that region around the delivery valve.

It is important to flush it out.



take a look at the threads of the holder and the female threads in the pump, you wil traces of rust there.

Alright. This did catch me off-guard, because the engine ran o.k. Under powered, but no excessive shaking. I will address the surface rust on the line nuts. The rusty delivery valve diesel nut was the hardest to unscrew, and it doesn't take much to toque them in the first place. Thanks for your reply.

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 04:10 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page