75 LJet will not fire, finishing restoration |
|
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. |
|
75 LJet will not fire, finishing restoration |
malcolm2 |
Jun 28 2013, 10:45 PM
Post
#1
|
Advanced Member Group: Members Posts: 2,747 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
Ok I think I am good on the seat belt relay. YLW and YLW/red are spliced. And I have checked for continuity all the way from the starter to the key on that wire.
I have spark, points checked too. I have fuel pressure, about 40 psi, checked between p-side fuel rail and cold start valve. Starter works fine oil pressure builds, light goes out on the dash Engine timing is still at rebuild setting...0 TDC. Re-built FI & Ignition & Alt harnesses I did have trouble with the key switch, so the steering wheel is out, levers are not connected and I turn a screw driver on the end of the key connector to fire the starter, should not be an issue, correct? I got the L-jet trouble shooting "no start" pages to try tomorrow. Any other ideas? I am baffled. (IMG:style_emoticons/default/confused24.gif) |
timothy_nd28 |
Jun 29 2013, 09:33 AM
Post
#2
|
Advanced Member Group: Members Posts: 2,299 Joined: 25-September 07 From: IN Member No.: 8,154 Region Association: Upper MidWest |
Okay, so the car turns over and you already verified spark and fuel pressure. I would double check and make sure you have the dropping resistors for the fuel injectors connected. Then turn your attention to the dual relay. With the ignition switch turned to the "on" position, measure pin 88a for voltage. You should see 12vdc, if this is true, remove the ECU connector and measure pin 10 for 12vdc.
|
malcolm2 |
Jun 29 2013, 02:04 PM
Post
#3
|
Advanced Member Group: Members Posts: 2,747 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
Okay, so the car turns over and you already verified spark and fuel pressure. I would double check and make sure you have the dropping resistors for the fuel injectors connected. Then turn your attention to the dual relay. With the ignition switch turned to the "on" position, measure pin 88a for voltage. You should see 12vdc, if this is true, remove the ECU connector and measure pin 10 for 12vdc. Yes 12v at both. FOr those following or future problems.... page two of this link has the pin out for the ECU of the L-jet. Bowlsby's L-Jet FI harness |
Lo-Fi Version | Time is now: 27th December 2024 - 01:34 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 ... |