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 ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 04-19-2002, 07:41 AM
Registered User
 
Join Date: Jan 2002
Posts: 177
Which direction do I turn the MPU?

Could someone please tell me which direction to turm the MPU adjustment screw to lean the fuel mixture on my 1972 350sl.
The adjustment screw faces away from you. I read somewhere that turning the screw clockwise leans the mixture.
Does turning the screw clockwise screw the adjustment screw into the unit or back it out of the MPU?



Thanks,


Knarf
__________________
72 350SL #69
73 450SL Parts Car?
78 450sl Parts Car
79 450SLC - Sold
1985 280sl
87 190E 2.6 - Donated
90 300E-Junked
97 E420
Reply With Quote
  #2  
Old 04-19-2002, 08:48 AM
Moderator
 
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
Always hard to remember the various places such adjustments matter. When you are doing it properly with an exhaust gas analyzer it is apparent. I don't remember.

The knob adjusts in distinct increments (clicks) move it 4-5 one direction...pause... move it back and go the other direction. Go the direction that makes the engine run faster. If it doesn't matter then return to the beginning and leave it alone. There is only about 2-3% CO change from one end to the other if I recall and none of it matters to anything but idle as the circuit is removed when the throttle switch is opened.
__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
Reply With Quote
  #3  
Old 04-19-2002, 07:44 PM
Registered User
 
Join Date: Jan 2002
Posts: 177
Steve,

Thanks for the reply.


Knarf
__________________
72 350SL #69
73 450SL Parts Car?
78 450sl Parts Car
79 450SLC - Sold
1985 280sl
87 190E 2.6 - Donated
90 300E-Junked
97 E420
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
190e turn signals not working properly AMG Tech Help 5 12-01-2003 10:21 PM
Turn flasher problem iwannabenz SL Forum 5 07-14-2003 04:13 PM
turn signal problem after steering box R&R rvolheim Tech Help 3 06-07-2003 05:19 PM
Hot Start Problem -- 220 Will Not Turn over when Hot MBenz2 Tech Help 0 03-10-2003 07:29 PM



All times are GMT -4. The time now is 07:17 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page