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 12-12-2013, 10:14 PM
Registered User
 
Join Date: Jun 2007
Posts: 29
1984 OM617 with suddenly erratic idle

Aloha all

I am baffled and hoping I can get some guidance.

I have an 84 300 td wagon and when I went to drive it today the engine wouldn't idle but stayed reved up to maybe 2000/2500 rpms ? (tach is broken) when I tried to shift it into gear to get it home, it would just stall. At home I tried to adjust the idle with the idle adjustment screw and can't seem to make sense of how it responds. when I turn it in- nothing and then sometimes it will idle down and stall and sometimes will continue to just run at a high rev.

I just replaced the injector nozzles and reset the valves. It is not a great engine and compression was kind of low with one cylinder down to 220 ( rest between 300 - 350 ) and some blowby When my wife drove it yesterday she said it ran 'fine' and then all of this started today?

What am I missing or doing wrong?

I am also still looking for someone experienced to barter a 617 tune up tutorial for some time in our B&B on Molokai in Hawaii. There is no Mercedes shop or mechanic here. I am self taught. I am an experiential learner and it is a frustratingly slow learning curve...

Reply With Quote
  #2  
Old 12-12-2013, 11:42 PM
Stretch's Avatar
...like a shield of steel
 
Join Date: Sep 2009
Location: Somewhere in the Netherlands
Posts: 14,461
Check the throttle linkages as per chapter 30 in the FSM

Make sure that the floor mats in the cabin aren't restricting the movement of the accelerator pedal and make sure there's a spring still attached to the accelerator linkage at the bulkhead and at the injector pump
__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
Reply With Quote
  #3  
Old 12-13-2013, 06:34 AM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 38,613
It sounds like it might be starving for fuel. I'd start by changing your fuel filters and treating the fuel tank to a good dose of biocide to kill any bacteria that might be clogging the filters.

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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 06:31 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