Parts Catalog Accessories Catalog Tech Info Tech Forums
  Search our site:    
 Cart  | Project List | Order Status | Help    

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 08-19-2001, 12:54 PM
Posts: n/a
timing unstable at high rpm

My timing is fine at idle and low RPMs, but jumps back and forth 5 or 10 degrees at 2000 - 3000 RPM. Timing is set at 4 degrees ATDC and now advances correctly to about 30 degrees BTDC at 3000 RPM.

I have eliminated the distributor as the cause by swapping it with a new one. I have tried both conventional points and a Crane electronic ignition. The engine is a Metric Motors rebuild with less than 1000 miles on it.

I am at a loss where else to look. Would a bad plug or cable cause timing problems such as this? What should I test?

1969 280SL

BTW - replacing the distributor (vac retard faulty) and adjusting the throttle linkage has fixed the engine surge I was previously experiencing - thanks for the help.
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
High rpm shifting (after full throttle) moruzzi Diesel Discussion 1 10-07-2004 02:15 PM
S500 not changing gears properly or what? high rpm s500 Tech Help 0 09-08-2004 08:50 PM
It's Timing Chain time and Anxiety is high! Tom McMenamin Tech Help 4 06-12-2003 08:19 AM
Replace Timing Chain?? When?? Gregg Vurbeff Diesel Discussion 13 01-24-2002 02:03 PM
190E Timing too high ? altan Tech Help 3 06-23-1999 09:37 AM

All times are GMT -4. The time now is 05:26 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, 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