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 03-05-2007, 10:07 AM
Registered User
 
Join Date: Feb 2005
Location: Denison, Texas
Posts: 290
1984 300 turbo diesel

My car idles about 400 rpm less when the engine is cold compared to when it is warm. It did not use to be that much different but now it is and when you adjust the idle with the engine is warm then when it is cold it is way to low and engine virbrates the air filter housing to much. What causes this would a new syle rack damper bolt cure this problem ?

__________________
84 300 Turbo / 320,000
96 E300 D / 55,000
Reply With Quote
  #2  
Old 03-05-2007, 11:03 AM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
The governor inside the injection pump is likely not doing the job. When operating correctly, the flyweights will move outward and control the idle rpm to a very tight tolerance.

When cold, the SD can be heard to creep up slightly in rpm and then fall slightly as the governor pulls the rack back to hold engine speed.

The rack damper bolt probably won't affect this issue, but, I'd be curious to see if it's too tight. Back it off by one turn and see if it makes a difference.
Reply With Quote
  #3  
Old 03-05-2007, 12:04 PM
Registered User
 
Join Date: Feb 2005
Location: Denison, Texas
Posts: 290
I have tried adjusting the bolt do to engine surging when engine is real cold and outside temp. is cold but this problem is still there. Thanks for the help
__________________
84 300 Turbo / 320,000
96 E300 D / 55,000
Reply With Quote
  #4  
Old 03-05-2007, 05:44 PM
toomany MBZ's Avatar
Registered User
 
Join Date: Nov 2006
Location: central Va
Posts: 7,820
I understand to adjust Rack Damper bolt when at operating temp.
__________________
83 SD

84 CD
Reply With Quote
  #5  
Old 03-05-2007, 05:48 PM
rrgrassi's Avatar
mmmmmm Diesel...
 
Join Date: Jun 2006
Location: Royse City Tx
Posts: 5,177
If the rack damper bolt it too tight, the car does not idle well when cold. That is a common symptom, so Brian is having this checked out first.

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K
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 12:21 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