 Smoke show, Smoke machine results and a question |
|
|
|
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. |
|
|
| Quinn Moore |
 May 28 2026, 04:20 PM
Post
#1
|
|
Qmoore  Group: Members Posts: 131 Joined: 13-July 21 From: Lake Geneva, WI Member No.: 25,718 Region Association: Upper MidWest 
 |
'73 2.0 FI stock motor.
Has been running great. Until it wasn't. Idle issues, couldn't get it really dialed in. Running a little rough, idling around 1100. Not bad, but was rock solid at 950 rpm and smooth running (123 distributor) . Anyway, fast forward. Hooked up a smoke machine, found injector seal on #3 leaking. Ill replace. also noticed smoke (from the smoke machine) coming out of The butterfly valve (plate) rod ends. A tiny bit on the TPS side, and a little more on the other side. Not much, a little. Finally the question: Is that normal, serviceable, negligible? (The pictue of the TPS side, couldn't capture the smoke with my phone) Thanks for your input. QM   |
   |
 
|
  |
Replies
| emerygt350 |
May 29 2026, 06:54 AM
Post
#2
|
|
Advanced Member Group: Members Posts: 3,589 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
A leak is just going to increase the idle, not cause instability. That sounds more like a sensor issue. Have you got an air fuel gauge on it?
|
|
|
|
| Quinn Moore |
May 29 2026, 10:29 AM
Post
#3
|
|
Qmoore Group: Members Posts: 131 Joined: 13-July 21 From: Lake Geneva, WI Member No.: 25,718 Region Association: Upper MidWest
|
QUOTE(emerygt350 @ May 29 2026, 07:54 AM)  A leak is just going to increase the idle, not cause instability. That sounds more like a sensor issue. Have you got an air fuel gauge on it? No I don't. On the "todo" list. QM |
|
|
|
Posts in this topic
|
8 User(s) are reading this topic (6 Guests and 0 Anonymous Users)
2 Members: Steve, Artfrombama
|
Lo-Fi Version | Time is now: 29th May 2026 - 12:06 PM |
Invision Power Board
v9.1.4 © 2026 IPS, Inc.