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 07-10-2003, 10:47 AM
jkearns
Guest
 
Posts: n/a
need help with sluggish 420SEL

I have a 1987 420SEL, 83K, that is idleing rough and stuttering/stalling on accel from a stop. Fuel pressure is a steady 90 psi. Compression is good. I have replaced distcap/rotor/wires and plugs, but no improvement. Once it gets going, it's perfect. Any hints or ideas would be appreciated.
Reply With Quote
  #2  
Old 07-10-2003, 12:35 PM
Registered User
 
Join Date: May 2003
Location: Rockville, MD
Posts: 96
Since you're asking for any help... I have an 87 420 also with 107K. Had symptoms you describe that started without warning or reason. Felt like it was missing a beat at idle (very rough for about a second every five seconds, oil pressure dip, RPM dip) and sputtered on takeoff like an old Peugeot. Threw a bottle of Techron in the tank and took it out on the highway and did some hard acceleration. Also put it in park and reved it into the 4-5K range for a bit. Took care of the problem straighaway. Not sure if I had a fuel line/filter/injector prob or if just running it out took care of it. Not too scientific but worth a shot?

John
Reply With Quote
  #3  
Old 07-10-2003, 12:44 PM
jkearns
Guest
 
Posts: n/a
Thanks, I'll give it a try.
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 04:25 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