 1976 2.0 question, throttle body |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| jimkelly |
 Jan 7 2006, 09:41 PM
Post
#1
|
|
Delaware USA  Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region  |
Up untill a few days ago my car was running fine but all of a sudden it started to back fire when I decelerated and starting it became difficult. One thing that has been found is the both the vaccum hoses - light blue and the red to the distributor - both pull vaccum at idle and both lose vaccum when giving the motor some throttle. The red is supposed to have little vaccum at idle and gain vaccum with added throttle - correct? We are thinking that my throttle body has gummed up hole some where but at this moment we don't know how the advance hose nipple is plumbed in the 1976 2.0 throttle body - anyone got any ideas or a detailed drawing of how the advance vaccum flows through it? Thanks, Jim
Attached image(s) 
|
   |
 
|
  |
Replies
| jimkelly |
Jan 9 2006, 05:06 PM
Post
#2
|
|
Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
Well I changed the mps and things are better but not perfect.
two questions - is the advance port on the dashpot the one closest to the dist or the one furthest and on top of the dashpot the advance port. Also - do I plug the hose coming off the advance port of the dashpot or do I leave it open to the air. |
|
|
|
Posts in this topic
jimkelly 1976 2.0 question Jan 7 2006, 09:41 PM
jimkelly TB Jan 7 2006, 09:41 PM Bleyseng Advance hose from the dizzy is plugged and just la... Jan 8 2006, 12:15 AM jimkelly I could be mixed up but I think we determined that... Jan 9 2006, 01:36 PM r_towle I hate to say this...but check your MPS...pull off... Jan 9 2006, 02:20 PM jimkelly I have a spare MPS - I'll give that a try. Tha... Jan 9 2006, 02:43 PM Rand If you connect a vacuum gauge to that nipple with ... Jan 9 2006, 02:48 PM jimkelly We get a vaccum reading at idle - but it dropps of... Jan 9 2006, 02:50 PM Rand Vacuum at idle but not at throttle = port below bu... Jan 9 2006, 02:54 PM Dave_Darling <... Jan 9 2006, 02:55 PM jimkelly rand - yes - vaccum at idel - it drops off with th... Jan 9 2006, 03:03 PM r_towle the vacuum advance circuit would only need to prod... Jan 9 2006, 03:06 PM Rand 
|
13 User(s) are reading this topic (13 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 15th January 2025 - 03:27 AM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.
| All rights reserved 914World.com © since 2002 |
|
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |