|
|

|
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. |
|
|
![]() ![]() |
| Jimz73 |
Aug 6 2018, 06:58 PM
Post
#1
|
|
Newbie ![]() Group: Members Posts: 10 Joined: 15-April 03 From: Maumee, Oh. Member No.: 575 |
Okay, I am totally stumped and dumb-founded. My car hasn't run for at least 2 years. I replaced the three port fuel pump with a new 2 port pump. The car is a '73 1.7 with stock fuel injection. I replaced fuel lines in tunnel with stainless steel lines at the same time. Tried to start, just cranked and cranked. It is getting gas to the injectors, but I could not get spark. I replaced the coil with a new one. Pulled lead from distributor and placed near the engine tin. Cranked the engine over, no spark. Car ran fine when I garaged it due to leaking fuel pump. I need help to figure it out. I even tried starting fluid and no go. Hasn't even made an attempt to fire.
|
| TheCabinetmaker |
Aug 6 2018, 08:22 PM
Post
#2
|
|
I drive my car everyday ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 8,373 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Point Gap closed or corroded, or bad condenser
|
| Rand |
Aug 6 2018, 08:29 PM
Post
#3
|
|
Cross Member ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 7,414 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
Lots of talk about fuel when you indicated it was spark. Try a few more shots of starting fluid. (IMG:style_emoticons/default/tongue.gif)
Did you try any other methods of testing spark? Is there power to the coil? |
| marksteinhilber |
Aug 6 2018, 08:56 PM
Post
#4
|
|
Member ![]() ![]() Group: Members Posts: 229 Joined: 18-October 12 From: Foothill Ranch, CA 92610 Member No.: 15,057 Region Association: Southern California |
You must confirm that you have 12v to the coil when ignition is on. If you have 12v to the coil, then you would check your points and condenser. The points should be opening and closing as engine cranks. An inductive timing light or spark tester can be used on the main coil to distributor lead. If there is no spark here, the problem is between the coil and the distributor and likely the points and condenser. If you sense spark getting to the center of the distributor cap, but no spark sensed in the plug wires, then you may have a bad rotor, cap, or wire connections at cap. Also make sure distributor is seated down, and rotor turns with engine. Make sure rotor lines up with TDC #1. As you check these parts realize that even the rotor and cap may have failed fail and won’t pass the spark. When I have no spark on an old car that hasn’t run in years, it can be as simple as rubbing the contact points with emery paper.
|
| Larmo63 |
Aug 6 2018, 09:11 PM
Post
#5
|
|
Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 4,267 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
Also, look inside the distributor cap at the center contact....?
|
| marksteinhilber |
Aug 6 2018, 09:22 PM
Post
#6
|
|
Member ![]() ![]() Group: Members Posts: 229 Joined: 18-October 12 From: Foothill Ranch, CA 92610 Member No.: 15,057 Region Association: Southern California |
|
| cary |
Aug 6 2018, 10:37 PM
Post
#7
|
|
Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 3,900 Joined: 26-January 04 From: Sherwood Oregon Member No.: 1,608 Region Association: Pacific Northwest
|
I'm with Curt. Just ran into that on Mick's car, burnt points. I assume from leaving the ignition on try to diagnosis other issues.
But confirm you have 12voits on the black/red wire coming from the relay board. |
| Dave_Darling |
Aug 6 2018, 11:30 PM
Post
#8
|
|
914 Idiot ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 15,335 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
|
Step 1: Verify that there is no spark An extra spark plug, hooked up to a plug wire and taped with the threaded part touching a ground, will produce a visible spark when the starter is cranked. If you see a spark, that's a strong hint that you do have spark...
--DD |
| Chris914n6 |
Aug 6 2018, 11:32 PM
Post
#9
|
|
Jackstands are my life. ![]() ![]() ![]() ![]() Group: Members Posts: 3,528 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
After 2 years of
Also get one of these, cheap and easy In-Line Spark Checker *(edited for Political Correctness) |
| Jimz73 |
Aug 7 2018, 08:29 AM
Post
#10
|
|
Newbie ![]() Group: Members Posts: 10 Joined: 15-April 03 From: Maumee, Oh. Member No.: 575 |
You must confirm that you have 12v to the coil when ignition is on. If you have 12v to the coil, then you would check your points and condenser. The points should be opening and closing as engine cranks. An inductive timing light or spark tester can be used on the main coil to distributor lead. If there is no spark here, the problem is between the coil and the distributor and likely the points and condenser. If you sense spark getting to the center of the distributor cap, but no spark sensed in the plug wires, then you may have a bad rotor, cap, or wire connections at cap. Also make sure distributor is seated down, and rotor turns with engine. Make sure rotor lines up with TDC #1. As you check these parts realize that even the rotor and cap may have failed fail and won’t pass the spark. When I have no spark on an old car that hasn’t run in years, it can be as simple as rubbing the contact points with emery paper. I just confirmed that I do not have 12V to the coil. I connected red lead to the + side of coil and black to engine tin, and with the key in the on position. No voltage registered at all. |
| dr914@autoatlanta.com |
Aug 7 2018, 08:30 AM
Post
#11
|
|
914 Guru ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 8,232 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
first make sure that in the crank position you still have power to the coil positive or 15 side, then put a dwell meter on the points and make sure you have 50 degrees dwell
Okay, I am totally stumped and dumb-founded. My car hasn't run for at least 2 years. I replaced the three port fuel pump with a new 2 port pump. The car is a '73 1.7 with stock fuel injection. I replaced fuel lines in tunnel with stainless steel lines at the same time. Tried to start, just cranked and cranked. It is getting gas to the injectors, but I could not get spark. I replaced the coil with a new one. Pulled lead from distributor and placed near the engine tin. Cranked the engine over, no spark. Car ran fine when I garaged it due to leaking fuel pump. I need help to figure it out. I even tried starting fluid and no go. Hasn't even made an attempt to fire. |
| taylspin46 |
Aug 7 2018, 09:36 AM
Post
#12
|
|
Newbie ![]() Group: Members Posts: 24 Joined: 25-January 13 From: Apopka Member No.: 15,422 Region Association: South East States |
You must confirm that you have 12v to the coil when ignition is on. If you have 12v to the coil, then you would check your points and condenser. The points should be opening and closing as engine cranks. An inductive timing light or spark tester can be used on the main coil to distributor lead. If there is no spark here, the problem is between the coil and the distributor and likely the points and condenser. If you sense spark getting to the center of the distributor cap, but no spark sensed in the plug wires, then you may have a bad rotor, cap, or wire connections at cap. Also make sure distributor is seated down, and rotor turns with engine. Make sure rotor lines up with TDC #1. As you check these parts realize that even the rotor and cap may have failed fail and won’t pass the spark. When I have no spark on an old car that hasn’t run in years, it can be as simple as rubbing the contact points with emery paper. I just confirmed that I do not have 12V to the coil. I connected red lead to the + side of coil and black to engine tin, and with the key in the on position. No voltage registered at all. |
| taylspin46 |
Aug 7 2018, 09:41 AM
Post
#13
|
|
Newbie ![]() Group: Members Posts: 24 Joined: 25-January 13 From: Apopka Member No.: 15,422 Region Association: South East States |
Ignition coil gets power from fuse9 via ignition coil. S9 also powers stop and reverse lights.
|
| taylspin46 |
Aug 7 2018, 09:42 AM
Post
#14
|
|
Newbie ![]() Group: Members Posts: 24 Joined: 25-January 13 From: Apopka Member No.: 15,422 Region Association: South East States |
|
| taylspin46 |
Aug 7 2018, 09:48 AM
Post
#15
|
|
Newbie ![]() Group: Members Posts: 24 Joined: 25-January 13 From: Apopka Member No.: 15,422 Region Association: South East States |
Meant poer to S9 from ign. Switch.
|
| Jimz73 |
Aug 7 2018, 11:02 AM
Post
#16
|
|
Newbie ![]() Group: Members Posts: 10 Joined: 15-April 03 From: Maumee, Oh. Member No.: 575 |
Thanks to all of you. I checked batteries in my meter and installed new. Tested coil again and I did have 12v at coil. I had reset points once before, but I took them out, lightly sanded contacts and reinstalled and gapped. The car started in just a few cranks. Runs rough, so I will change plugs, points, condenser, rotor, cap, and wires and see if running improves. Again, thanks.
|
| Chris914n6 |
Aug 7 2018, 01:50 PM
Post
#17
|
|
Jackstands are my life. ![]() ![]() ![]() ![]() Group: Members Posts: 3,528 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
Also let it run 10-30 minutes to clean the old gas out of the injectors.
|
| TheCabinetmaker |
Aug 7 2018, 02:01 PM
Post
#18
|
|
I drive my car everyday ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 8,373 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
What did you gap the points at. Fsm says to set dwell at 47 +or- 3 degrees. Don't rely on the. 016 point gap. Use a dwell meter. Adjust valves, set fuel pressure, set dwell, then lastly, set timing with vacuum hoses unplugged, and capped.
|
| 914_teener |
Aug 7 2018, 04:50 PM
Post
#19
|
|
914 Guru ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 5,270 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
After 2 years of Obamagas the injectors are likely stuck and need cleaned. Also get one of these, cheap and easy In-Line Spark Checker Your political views have nothing to do with why the OP has no spark. Keep them to yourself. To the OP: Check the ground lead on the advance plate to make sure it is connected and do what Dave Darling says first. |
| Chris914n6 |
Aug 7 2018, 07:41 PM
Post
#20
|
|
Jackstands are my life. ![]() ![]() ![]() ![]() Group: Members Posts: 3,528 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
After 2 years of Obamagas the injectors are likely stuck and need cleaned. Also get one of these, cheap and easy In-Line Spark Checker Your political views have nothing to do with why the OP has no spark. Keep them to yourself. There is nothing political about the ethanol mandate destroying fuel systems of cars built before it. I just did a fuel pump on a 2005 Beetle that sat for 2 years, the plastic transfer tube crumbled and the rubber melted. Common pieces in all German cars. Also I stepped in the puddle and it left half my sole in the concrete. It's also a problem for the couple cars I don't drive often. OP mentioned he had 2 year old gas.... it is relevant if it's not squirting or has pre-ethanol hoses. |
![]() ![]() |
|
Lo-Fi Version | Time is now: 2nd April 2026 - 12:41 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 ... |