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 06-30-2008, 01:01 PM
Registered User
 
Join Date: Jun 2008
Posts: 20
74 450SL distributor vacuum question

I am working my way through issues on a '74 450SL I just purchased (93K miles) and do not have a service manual. Problem - I have no vacuum to my distributor at any rpm/engine temp. On the throttle valve are two 1/8" vacuum ports - one on the front and one on the rear of the body. The rear port, where it is plumbed, shows no measurable vacuum. The front port shows 14" to 18" vacuum depending on rpm. I assume the front port is where it should be plumbed to??

Second distributor vacuum problem. The switch over valve, between the distributors vacuum source and the distributor, is not opening at any temp/rpm. What activates the switch over valve? How can I tell which is defective?

Thanks in advance, Hal

Reply With Quote
  #2  
Old 07-01-2008, 09:31 AM
meltedpanda's Avatar
Certified Benzaholic
 
Join Date: Mar 2003
Location: Central Ky
Posts: 6,265
'74 450SL... wrong distributor?

read this,
__________________
Ron
2015 Porsche Cayman - Elizabeth
2011 Porsche Cayman - Bond,James Bond
Sadly MERCEDESLESS - ALways LOOKING !
99 E320 THE Queen Mary - SOLD
62 220b - Dolly - Finally my Finny! Sadly SOLD
72 450SL, Pearl-SOLD
16 F350 6.7 Diesel -THOR
19 BMW X5 - Heaven on Wheels
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
  #3  
Old 07-01-2008, 02:09 PM
Registered User
 
Join Date: Jun 2008
Posts: 20
Thanks Ron, just what I needed to solve this problem.

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 02:06 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, 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