![]() |
|
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. |
|
![]() |
slu234 |
![]()
Post
#1
|
Member ![]() ![]() Group: Members Posts: 57 Joined: 20-January 09 From: Staunton, VA Member No.: 9,949 Region Association: MidAtlantic Region ![]() |
This is my barn car that has been sitting for 30 years. It is a 1970 1.7L stock D-jet FI. I pulled the engine and also the FI wiring harness to freshen up some sheathing and a few terminals. Here's the list of FI and ignition repairs/replacements done. Engine back in last month and still sorting a few things out...
The engine did run (rather poorly though) before all of the following. -New plugs, wires, points, condenser, rotor and cap. -New blue coil -New fuel pump and hoses -Added fuel pressure gauge in line. -Fuel pressure at 30psi - jumpered fuel pump at relay to set -New vacuum hoses -Verified all ECU connections using Bowlsby's checklist on his site (although had no help to verify both trigger points operation while cranking - not cranking, had one side open and one side closed) -Fuel injectors were sent out about a year ago for cleaning - were put back in and run but have been sitting since then (possibly clogged??) -New vacuum advance/retard canister -Static timing done and points gap set for initial start up. The engine will turn over easily by the starter and will run for a short burst on starting fluid. I do not hear the "brrrrrrr" or "clicks" of the FI's clicking as the throttle is opened (i did verify that the TPS is connected and working while going over Bowlsby's checklist). Are my FI's stuck or clogged, ECU dead, what else?? (IMG:style_emoticons/default/headbang.gif) Where next? I am so close to getting this thing on the road after about 2 years of sorting things out. I would greatly appreciate any direction. Thanks guys! Brian |
![]() ![]() |
slu234 |
![]()
Post
#2
|
Member ![]() ![]() Group: Members Posts: 57 Joined: 20-January 09 From: Staunton, VA Member No.: 9,949 Region Association: MidAtlantic Region ![]() |
Update......
I built a noid light out of two pre-wired 12V LED panel lights from Radio Shack. $1.99 each. I wired them in parallel with opposite polarity. Made leads about 5' long with spade connectors on the end. I used two LED's wired this way so I would not have to be concerned with polarity - I know that one of them will fire if there is voltage there. Plugged these into the fuel injector plugs to verify that the injectors are firing. All four injectors are firing while cranking!! So it is not the ECU. Trigger points are working. The leads were made long enough to hold in the cab while cranking the engine. Jumpered the fuel pump to run constantly, cranked the engine and it seems like it wants to start - catches a few times but won't run. Tried moving the dizzy - began to backfire some. My guess at this point is needing to revisit static timing. How would I know if my dizzy is 180 degrees off? I did a total dis-assembly and cleaning - could have put the drive cog on 180 degrees off. Brian |
![]() ![]() |
![]() |
Lo-Fi Version | Time is now: 9th May 2025 - 11:07 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 ... |