Timing woes, I wish I wish I hadn't killed that fish! |
|
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. |
|
Timing woes, I wish I wish I hadn't killed that fish! |
mike_the_man |
Apr 22 2004, 09:07 PM
Post
#1
|
I like stuff! Group: Members Posts: 1,338 Joined: 11-June 03 From: Regina, Saskatchewan, Canada Member No.: 809 |
Hi all,
My car was running like piece of poop recently (74 2.0L with F.I.), but backing off the timing a little made it run a fair bit better. Today I took it for a little drive, got it nice and warm, and decided to try and re-time it. It turns out that my timing was correct when it was running poorly, and now I'm very confused. I checked top dead center on the fan and on the fly wheel, as well as looking at the position of the rotor. Everything points to top dead center. I then put a new mark on the fan at 27 degrees as per the PP tech article. I also found the 27 degree mark on the fan, and it lines up with the mark that I made. When I rev my car up to 3500 rpm and set the timing to the 27 degree mark (I disconnected the vacuum hose from the dizzy) the car runs like crap. But if I set the static timing (not revving the car up, but setting it at idle) to 27 degrees, it seems to run pretty good. I'm totally confused. Could it be that the mechanical advance isn't working? Is there any way to test the mechanical advance? What would the symptoms be? I hope this all makes sense, and I'm sorry for the long post. Thanks for all ideas. A (IMG:style_emoticons/default/beer.gif) to the first person that gets it right. |
SLITS |
Apr 23 2004, 10:15 AM
Post
#2
|
"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
There is a couple of other things:
1. If you have not popped the cap lately, take a look. I replaced a rotor with a different kind and didn't realize that while running, the rotor base was rubbing the Petronix unit creating bakelite dust inside the dizzy. I found out when the car started running real bad. 2. I had two hookups on my '74. One was the TB and the other was off the plenum with a rubber fitting that serviced the AAR and dizzy. See images: (IMG:http://www.rccauto.com/ebay/914tb.jpg)(IMG:http://www.rccauto.com/ebay/914tb1.jpg)(IMG:http://www.rccauto.com/ebay/914tb2.jpg)After all this bull, if you need to try another dizzy, send me an address via email and I'll send you a '74 dizzy to try. |
Lo-Fi Version | Time is now: 7th June 2024 - 01:35 PM |
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 ... |