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 > Mercedes-Benz SL Discussion Forum

LinkBack Thread Tools Display Modes
Old 10-06-2009, 07:28 AM
Registered User
Join Date: Oct 2009
Posts: 2
380sl mixture baseline adjustment

Hi Guys,
A friend of mine has a 380sl 1985, it was running rich so they adjusted the 3mm allen screw behind the air intake, now it won't start or run at all, and the adjustment of this scew is way out, I figure it gets adjusted with a duty cycle meter or similar with the engine running but I cannot get it to start, is there a ball park method to get the thing to fire so I can then get it back to the correct position and find the real problem?
Any help appreciated.
Reply With Quote
Old 10-06-2009, 08:40 AM
Super Moderator
Join Date: Apr 2000
Location: Falls Church, VA
Posts: 5,316
There are plenty of posts on adjusting the mixture with a dwell meter or a meter with a duty cycle, try a Search.

To get it to start, push the air sensor plate down maybe 1/2" with a stick while someone cranks the starter. If the car starts, this sort of verifies that the mixture is the problem. Then you can richen the mixture, going 1/8 turn (CW looking down) at a time and trying to start.

If it won't start with the plate pushed down, then you need to verify that the pump is running, check fuel pressure, etc.
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
Reply With Quote
Old 10-06-2009, 10:30 PM
Registered User
Join Date: Oct 2009
Posts: 2
Thanks for your reply,
I removed one injector line and adjusted it until it let fuel flow when the plate was just pushed slightly, it now fires but doesn't catch, I will try what you suggested later when I have someone available to crank it.
Thanks again, I'll let you know how I progress
Reply With Quote


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 08:32 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