Is this the dreaded 914 vapor lock?, Asking for your ideas and thoughts |
|
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. |
|
Is this the dreaded 914 vapor lock?, Asking for your ideas and thoughts |
Artfrombama |
Jul 14 2024, 05:04 PM
Post
#1
|
Member Group: Members Posts: 156 Joined: 21-January 24 From: Alabama Member No.: 27,870 Region Association: South East States |
Drove my 914 to a PCA function yesterday morning, 93f and humid.
After driving on the interstate at 70-75mph for around 45 miles I exited and the motor died. I had enough momentum and coasted into a gas station/convenience store where I topped off the tank and tried to restart the car, no luck. The car would fire, run a few seconds and die then refused to re-start for another 10-15 minutes then the same scenario again. No tools to diagnose or repair. While waiting on AAA for three hours (another story) I would occasionally try to start the car with the same results. Today, car started normally, runs normally. 1974 L-jet, original three bung fuel pump, original location. 500 miles on new tank, sock, filter, ss lines. |
ClayPerrine |
Jul 25 2024, 05:41 AM
Post
#2
|
Life's been good to me so far..... Group: Admin Posts: 15,806 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
The L-Jet wiring is now more than 50 years old, and it lives in a harsh environment. Wiring of that vintage is now breaking from heat cycling and the insulation getting brittle. Based on what he has already done, I would suspect that there is an old wire in the harness that is going open circuit due to vibration.
The other alternative is just as bad. The 50 + year old ECU is failing intermittently due to vibration. My suggestion would be to invest $455 in a new harness from Bowlsby.net. This eliminates old wiring as a possibility. If it doesn't fix it, I will be happy to send a different ECU. I have lots of them. Clay |
Lo-Fi Version | Time is now: 18th September 2024 - 07:22 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 ... |