 DJet Problems, 3000-4000 RPM Stumble |
|
|
|
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. |
|
|
| yeahmag |
 Jun 29 2012, 12:21 PM
Post
#1
|
|
Advanced Member  Group: Members Posts: 2,448 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California 
 |
I'm helping a friend with a DJet issue and I use to consider myself pretty good with this system, but I'm running out of ideas with this one. There is a considerable stumble at steady-state, 3000-4000 RPM. So far I've done the following:
* Replaced his dizzy with one of my good ones - re-timed. * Replace his spark plug cables, rotor, and cap known good ones. * Disabled the TPS to rule that out. He's running a Petronix Ignitor that we swapped over to my dizzy. I'm starting to suspect it, but what keeps me from changing that out is that it runs well at WOT. It really feels like a spark/timing issue... What am I missing here??? -Aaron |
   |
 
|
  |
Replies
| yeahmag |
Jun 29 2012, 12:52 PM
Post
#2
|
|
Advanced Member Group: Members Posts: 2,448 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California
|
That's not a bad idea. I'll have him pull the injectors and we can measure their output. If I remember right I just turn the ignition on and off a few times and then compare the cc's. Correct?
|
|
|
|
Posts in this topic
yeahmag DJet Problems Jun 29 2012, 12:21 PM
Racer Chris I doubt its the pertronix.
Maybe one injector is w... Jun 29 2012, 12:48 PM 76-914 Ign on and pushing the throttle will activate inj... Jun 29 2012, 01:01 PM
Racer Chris
... wouldn't pulling temp sensor II do the sa... Jun 29 2012, 01:35 PM vsg914 Temp sender two is the head temp sensor. Pull it a... Jun 29 2012, 01:26 PM 76-914 My bad; temp sensor I. Air intake sensor..... and ... Jun 29 2012, 01:29 PM vsg914 You said you disabled the tps to rule it out. Did ... Jun 29 2012, 01:32 PM yeahmag No. It did not run better.
You said you disabled... Jun 29 2012, 02:53 PM 914_teener
No. It did not run better.
You said you disable... Jun 29 2012, 03:34 PM yeahmag Fuel pressure was set a bit ago, but warrants re-c... Jun 29 2012, 03:40 PM pbanders Sounds like ignition to me. You did everything but... Jun 30 2012, 03:21 PM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 9th May 2025 - 10:39 AM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.