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

LinkBack Thread Tools Display Modes
Old 02-03-2002, 04:24 AM
Posts: n/a
Pleas help- Ignition/electrical problem is hurting my head

1970 280sl:
put the rebuild distrubutor in and turns out the old cap didnt fit. so i got the right one and it would turn and turn without any firing. Put the old distrubutor and the same thing happned. swapped them out a few times throughout the day and I accidentally did something that got the car running. I was checking to see if i was getting spark to the dist cap and it turned over! when i hold the wire 1/2 inch above the cap, the spark jumps into the cap (you can see it) and runs like a charm.
I tried this with both distributors and same thing. My only guess is that its the coil, but WHY?

But can it be? I'm getting sparks, so coil is working?
Thanks for reading
Reply With Quote
Old 02-03-2002, 11:16 AM
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
What you are doing is establishing a booster gap. This becomes the highest form of resistance in the circuit and takes the spark energy and changes it. The conditions that exist, most likely fouled plugs or rich mixture have made the spark required very low voltage (with a longer duration to disapate the energy). By creating a booster gap you have artificially upped the spark voltage (shorter duration) probably on that car to around 25kv (it was probably around 5kv if left to the conditions that existed).

The extra spark voltage is overcoming the mixture or plug problem.
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
Reply With Quote
Old 02-03-2002, 02:06 PM
Posts: n/a
you were right! (obviously). all my plugs were fouled. I just put in a new set of bosch platinums in, but I'm worried the mixture is too rich and its a matter of time before the new ones get messed up.
I do i control the mixture on the FI?

one more question: The new (rebuilt) distributor is making me crazy! I set the point and the car will start (but run like crap, as previousy posted), and then I'll check the point again and it wontbe set again. Why does the stupid thing kep moving?
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
1978 300d Cyl Head availability & $$$$ ajb Diesel Discussion 4 01-12-2005 04:40 PM
Tormenting Problem with 95 E320 (Long) JetForeman Tech Help 16 10-01-2003 10:57 AM
380SEL replace 6 bent valves or used head? New2MBZ Tech Help 0 07-30-2003 01:17 PM
Tackling M103 head cyl gasket (need expert tips) pmizell Tech Help 7 12-27-2001 03:54 PM
Help!! 380SE head leaking OIL? barndoor Tech Help 11 10-31-2001 01:19 AM

All times are GMT -4. The time now is 01:24 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, 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