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 > Vintage Mercedes Forum

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 08-02-2013, 10:32 PM
Registered User
 
Join Date: Dec 2012
Posts: 93
Anyone have problems post Pertronix install?

I've posted a lot about driveabilty issues with my '67 230S, 4-speed. My mechanic installed a Pertronix Igniter and coil, did valve adjustment, new NGK plugs, new copper plug wires and plug caps from M-B Classic. New fuel pump, filter, gas tank too. Then we got so frustrated with the Zeniths, we tossed those for a Weber set up.

The stumble still persists. Mind you, the car runs 100% better then it did before we started but it is this little burp between 1,900 and 2,100 rpms that bugs the hell out of me. BTW, it doesn't occur with a heavy throttle, just a lighter or normal acceleration.

So now my mechanic thinks it's ignition. The only thing we haven't changed is the distributor. Could a worn out one cause something like is? Or is the Igniter the issue? Should I try a different electronic ignition? Or is it something simple like futzing with the timing?

__________________

Michael Maddalena
Mint2Me.com
Warren, Connecticut
203.417.6856


Todays great finds at: http://www.mint2me.com
Follow us on Twitter: http://twitter.com/itsmint2me
Reply With Quote
  #2  
Old 08-02-2013, 11:55 PM
Adv_rider's Avatar
Registered User
 
Join Date: Dec 2012
Location: Mexico City
Posts: 215
Pertronix been flawless for me.
__________________
1972 W108 280SE 4.5
1977 W116 450SEL
2008 W211 E63 AMG
1981 E12 528i BMW
Reply With Quote
  #3  
Old 08-03-2013, 04:27 AM
Regitsered User
 
Join Date: Dec 2011
Location: Honolulu, HI
Posts: 475
Just a thought if you plan to stick with the Pertronix: Might want to have the distributor rebuilt if you've gone through everything else.

The Pertronix may be new, but it is sitting on a 45 year old piece of kit, with bearings that haven't gotten any tighter since it left the factory. It could be loose/"floating" at that particular RPM, especially without decent load. Benz Dr on here rebuilds them, BTW.

(You could get a new distributor, but if you go that route, you may as well get the one that comes with a built-in ignition and selectable advance curves.)
__________________
Looking for Early 108 windshield surround wood in decent-to-good condition.
Reply With Quote
  #4  
Old 08-03-2013, 07:35 AM
Registered User
 
Join Date: Dec 2012
Posts: 93
Quote:
Originally Posted by Palolo View Post
Just a thought if you plan to stick with the Pertronix: Might want to have the distributor rebuilt if you've gone through everything else.

The Pertronix may be new, but it is sitting on a 45 year old piece of kit, with bearings that haven't gotten any tighter since it left the factory. It could be loose/"floating" at that particular RPM, especially without decent load. Benz Dr on here rebuilds them, BTW.

(You could get a new distributor, but if you go that route, you may as well get the one that comes with a built-in ignition and selectable advance curves.)
I didn't know you could rebuild a distributor...is there a kit one buys that has all of the parts if i wanted to tackle it myself? If I just wanted to buy a new one all set-up what/where do I find one?

BTW, we love Hawaii. I spent years in the Corporate travel business and brought many groups to Honolulu and Maui. I worked with Mary Charles in case you might know the name...

We haven't been in quite some time but miss it.
__________________

Michael Maddalena
Mint2Me.com
Warren, Connecticut
203.417.6856


Todays great finds at: http://www.mint2me.com
Follow us on Twitter: http://twitter.com/itsmint2me
Reply With Quote
  #5  
Old 08-03-2013, 03:43 PM
Regitsered User
 
Join Date: Dec 2011
Location: Honolulu, HI
Posts: 475
What a small world. I have worked with MCA in the past, at a former job with a local (to Hawaii) airline.

Info PM'd on distributor/rebuilding.
__________________
Looking for Early 108 windshield surround wood in decent-to-good condition.
Reply With Quote
  #6  
Old 08-03-2013, 04:07 PM
meltedpanda's Avatar
Certified Benzaholic
 
Join Date: Mar 2003
Location: Central Ky
Posts: 6,139
Petronix will help with distributor wobble, but wont eliminate it if it is bad., also make sure the magnet is seated all the way down and not rising up.

BTW I love your daily emails from your Mint to ME site.. I am in search of a Porsche fixer upper and I look there every day, the ones lately are awesome but way out of my range
__________________
Ron
2011 Porsche Cayman - Bond,James Bond
99 E320 THE Queen Mary
62 220b - Dolly - Finally my Finny!
72 450SL, Pearl-SOLD
16 F350 6.7 Diesel -THOR
07 Lexus RX 350 - Lexi
14 38HP John Deere 3038E Tractor -Mean Green
84 300SD, Benjamin -SOLD
71 220 - W115-Libby ( my first love) -SOLD
73 280 - W114 "Organspende" Rest in Peace
81 380 SL - Rest in Peace
Reply With Quote
  #7  
Old 08-03-2013, 05:00 PM
Registered User
 
Join Date: Jul 2012
Location: Mooresville, NC
Posts: 159
Sometimes just taking the distributor apart and giving it a good clean and lube will help. I did this and installed a Pertronix a year ago on my 68 230 W110 and have not had to touch it since. Make sure the advance plate operates freely and the shaft bushes aren't sloppy.
__________________
1968 230 W110
1985 300TDT W123/S123
Reply With Quote
  #8  
Old 08-03-2013, 09:23 PM
JMela's Avatar
Registered User
 
Join Date: Apr 2003
Location: Minneapolis, MN
Posts: 990
Yeah, they're rebuildable. Here's a nice photo essay on a similar model's rebuild:

http://www.glenn-ring.com/010/index2.html


Dan Caron (Benz Dr. on this forum) has rebuild kits, do a search for his contact info.
Reply With Quote
  #9  
Old 08-04-2013, 01:28 AM
Registered User
 
Join Date: Jul 2011
Posts: 528
I doubt that it's the ignition if it only happens in that rpm range. I think that it's too lean, but it could also be rich. Installing a wide band oxygen sensor could confirm that. I would try one step richer idle jets and see what happens. Webers run off the idle circuit well past idle, and 2000 rpm may be the point of transition to the main circuit.
This is when it pays to have a mechanic that has a lot of Weber experince, and also may have extra jets floating around.
bye,
__________________
Csaba
1972 280SEL 4.5, silver
Reply With Quote
  #10  
Old 08-04-2013, 07:42 AM
Registered User
 
Join Date: Dec 2012
Posts: 93
Quote:
Originally Posted by vandor View Post
I doubt that it's the ignition if it only happens in that rpm range. I think that it's too lean, but it could also be rich. Installing a wide band oxygen sensor could confirm that. I would try one step richer idle jets and see what happens. Webers run off the idle circuit well past idle, and 2000 rpm may be the point of transition to the main circuit.
This is when it pays to have a mechanic that has a lot of Weber experince, and also may have extra jets floating around.
bye,
A thoughtful possibilty. But I had the problem with the original Zeniths in the same spot. It is one of the many reasons we went to the Webers.
__________________

Michael Maddalena
Mint2Me.com
Warren, Connecticut
203.417.6856


Todays great finds at: http://www.mint2me.com
Follow us on Twitter: http://twitter.com/itsmint2me
Reply With Quote
  #11  
Old 08-04-2013, 10:03 AM
Registered User
 
Join Date: Dec 2012
Posts: 93
Quote:
Originally Posted by meltedpanda View Post
Petronix will help with distributor wobble, but wont eliminate it if it is bad., also make sure the magnet is seated all the way down and not rising up.

BTW I love your daily emails from your Mint to ME site.. I am in search of a Porsche fixer upper and I look there every day, the ones lately are awesome but way out of my range
Thanks for your input and comment about Mint. You should let me know what you are looking for in a Porsche. We don't usually post projects but we see them everyday.
__________________

Michael Maddalena
Mint2Me.com
Warren, Connecticut
203.417.6856


Todays great finds at: http://www.mint2me.com
Follow us on Twitter: http://twitter.com/itsmint2me
Reply With Quote
  #12  
Old 08-04-2013, 11:50 AM
Registered User
 
Join Date: Jan 2006
Location: Tucson, AZ
Posts: 4,722
Does the problem only occur under a load or can you get the stumble to appear in neutral?

If you can get it to happen in neutral then connect a timing light and see if you are getting a "jumping" of the timing mark at that occurrence.

"No jump"? Quit looking at the distributor as the problem.
__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now
Reply With Quote
  #13  
Old 08-14-2013, 06:33 AM
Regitsered User
 
Join Date: Dec 2011
Location: Honolulu, HI
Posts: 475
It was the distributor as suspected... Zenith Carb Issue - What would you do?

__________________
Looking for Early 108 windshield surround wood in decent-to-good condition.
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 11:40 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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