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 10-16-2006, 12:54 AM
Registered User
 
Join Date: Sep 2005
Posts: 5
300 cd Injector Line Leak... Now Ugly Knock

Okay... take a picture of this.

Girlfriend drives around the block to the store. When she starts the car to return home ugly knocking starts. Upon her immediate return (short trip, less than a mile) I discover fuel line leak at the injector side. Replaced brass line, still knocking. Sounds bad, feels bad, is this bad?

Could the leak have killed the injector? Could it have created an instant bad valve?

Any help most appreciated!
Reply With Quote
  #2  
Old 10-16-2006, 01:34 AM
greasybenz's Avatar
Registered User
 
Join Date: Nov 2005
Location: San Francisco, CA
Posts: 2,082
the brass line should have been ok. You have to replace the injector heat shield and tighten the injector. A loose/leaky injector will create the knock and rough idle it shouldnt kill the injector or mess up a valve.

EDIT: refer to dieselgiants write up on the bosio nozzles. Towards the end where he explains the heat sheild, that should help you out.

http://dieselgiant.com/mercedesinjectornozzlereplace.htm
__________________
Current:
05 E320 CDI
07 GL320 CDI
08 Sprinter
05 Dodge Cummins
01 Dodge Cummins

Previous
2004 E55 AMG
2002 C32 AMG (#2)
1995 E300
1978 300D
1987 300D
2002 C32 AMG(blown motor :[
1981 300SD
1983 300SD
1987 300SDL
2002 Jetta TDI
1996 S420
1995 S500
1993 190E 2.6
1992 190E 2.3
1985 190E 2.3 5-Speed
Reply With Quote
  #3  
Old 10-16-2006, 06:00 AM
Registered User
 
Join Date: Nov 2004
Location: Nova Scotia, Canada.
Posts: 6,510
We are talking about a line from the pump to the injector? How did you deal with the pump end of the line? Any chance you disturbed the pump fitting by overtightning? Start by loosening the injector line at the injector and seeing if the knock stops. There are a whole sequence of tests that one can do to pin it down if they become required. The important thing is to go slow and think. Needless to say the above is only my opinion. I am going to make a couple of assumptions here. Replacing the injector line stopped the leak? Also there is no chance what you describe has hurt an engine valve.
Reply With Quote
  #4  
Old 10-16-2006, 10:52 AM
Registered User
 
Join Date: Jun 2004
Location: West of Ft. Worth. TX
Posts: 4,142
Question Replaced the brass line???

Are you talking about the hard line from the pump to the injector?

I would be more suspect of the return fuel lines that go from injector-to-injector. When they leak, it could cause the same symptoms and appear as a leak from the injector or hard line.

BTW, what did you replace it with?
__________________
Sam

84 300SD 350K+ miles ( Blue Belle )
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 03:01 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