 914 runs only in high Rev. |
|
|
|
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. |
|
|
  |
| VF 914 |
 Jun 20 2021, 11:48 AM
Post
#1
|
|
Newbie  Group: Members Posts: 3 Joined: 12-June 21 From: London, England Member No.: 25,628 Region Association: England  |
I have a 1972 914, 1.7L always started on the turn of the key. Last week I turned the key, engine turned over but didn’t start up. I pressed the throttle and it started but only stayed running with the throttle about 2000 rpm. As soon as I eased off the throttle or took my foot off, the engine would stall. Fuel filter is new. Checked all vacuum hoses and connections, appear to be fine. Any suggestions as to what the problem could be and how to fix it would really be appreciated.
|
   |
 
|
| mgp4591 |
Jun 20 2021, 12:56 PM
Post
#2
|
|
914 Guru Group: Members Posts: 5,375 Joined: 1-August 12 From: Salt Lake City Ut Member No.: 14,748 Region Association: Intermountain Region 
|
QUOTE(VF 914 @ Jun 20 2021, 11:48 AM)  I have a 1972 914, 1.7L always started on the turn of the key. Last week I turned the key, engine turned over but didn’t start up. I pressed the throttle and it started but only stayed running with the throttle about 2000 rpm. As soon as I eased off the throttle or took my foot off, the engine would stall. Fuel filter is new. Checked all vacuum hoses and connections, appear to be fine. Any suggestions as to what the problem could be and how to fix it would really be appreciated. You'll get more positive feedback if you post this in the Garage area... this is the Classifieds if you're looking for parts. There's so much information from experienced 914 owners in the Garage. Good luck! |
|
|
|
| Mark Henry |
Jun 20 2021, 06:38 PM
Post
#3
|
|
that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Could @SirAndy please move this to the garage. (IMG:style_emoticons/default/smile.gif)
Only runs at high idle is almost always a vacuum leak, a hose got knocked off, is cracked and leaking, etc. |
|
|
|
| scottthephotog |
Jun 20 2021, 09:02 PM
Post
#4
|
|
Member Group: Members Posts: 187 Joined: 20-November 18 From: Euless, TX Member No.: 22,667 Region Association: Southwest Region |
A vacuum leak on D-Jet would cause the idle RPM to shoot up. To me it sounds like a timing issue. I'd double check your distributor. Maybe it loosened up and moved.
|
|
|
|
| VaccaRabite |
Jun 21 2021, 07:53 AM
Post
#5
|
|
En Garde! Group: Admin Posts: 13,445 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Lets start with some basics. Since you are looking at vacuum hoses are we correct that you have DJet fuel injection?
Zach |
|
|
|
| JamesM |
Jun 23 2021, 07:06 PM
Post
#6
|
|
Senior Member Group: Members Posts: 1,900 Joined: 6-April 06 From: Kearns, UT Member No.: 5,834 Region Association: Intermountain Region |
QUOTE(VF 914 @ Jun 20 2021, 09:48 AM) I have a 1972 914, 1.7L always started on the turn of the key. Last week I turned the key, engine turned over but didn’t start up. I pressed the throttle and it started but only stayed running with the throttle about 2000 rpm. As soon as I eased off the throttle or took my foot off, the engine would stall. Fuel filter is new. Checked all vacuum hoses and connections, appear to be fine. Any suggestions as to what the problem could be and how to fix it would really be appreciated. Failing MPS or CHT. Seen that symptom with either one of them. Most common failure mode for both parts is to send the system full rich. opening the throttle can allow enough air in for it to eventually fire but it wont idle and will run like garbage. Both are fairly easy to check. If it just started happening out of the blue I would look at the MPS first. What is your exhaust smelling like? |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 20th May 2024 - 06:46 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.