Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
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.
 

Welcome Guest ( Log In | Register )

> possible MSD disaster, could I have fried my ignition
moneysmarts
post Mar 8 2020, 08:36 PM
Post #1


Member
**

Group: Members
Posts: 164
Joined: 2-March 04
From: Central Massachusetts
Member No.: 1,745
Region Association: None



Thought I'd get geared up for the spring
New plugs, rotor, cap, wires, and Bosch Blue coil.
All installed, nice and neat, fired up the engine, ran fine for 60 seconds....then dead.
No spark at all. Put all the old stuff back, still no spark.
Is my new coil not compatible? It's the same part number as the one I've been running for 10 years. Did I smoke the MSD 6AL?
Please advise
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
Reply to this topicStart new topic
Replies
IronHillRestorations
post Mar 9 2020, 09:44 AM
Post #2


I. I. R. C.
*****

Group: Members
Posts: 6,724
Joined: 18-March 03
From: West TN
Member No.: 439
Region Association: None



The green and purple wires are for a magnetic pickup distributor, and your 009 is not. Pertronix isn't a true magnetic pickup, so it uses the white wire just like a points distributor.

edit: I've never read anything about shorting the mag pickup wires, and I've done several engine harnesses that have used the white wire. My guess is that fried your MSD box
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
stownsen914
post Mar 9 2020, 09:59 AM
Post #3


Senior Member
***

Group: Members
Posts: 913
Joined: 3-October 06
From: Ossining, NY
Member No.: 6,985
Region Association: None



Maybe try tracing spark through the system. Sounds like you get one from the MSD. Can you try triggering it from the distributor and see if you get spark from the coil? Make sure the points are clean, that's easy to check. Coils fail, do you have a spare to try?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
moneysmarts
post Mar 9 2020, 10:21 AM
Post #4


Member
**

Group: Members
Posts: 164
Joined: 2-March 04
From: Central Massachusetts
Member No.: 1,745
Region Association: None



QUOTE(stownsen914 @ Mar 9 2020, 07:59 AM) *

Maybe try tracing spark through the system. Sounds like you get one from the MSD. Can you try triggering it from the distributor and see if you get spark from the coil? Make sure the points are clean, that's easy to check. Coils fail, do you have a spare to try?


Well, I used a jumper to ground the magnetic pick-up wire hanging unused from the MSD box, but evidently that's not the correct procedure to check the MSD for functionality.
I try to figure out another way to diagnose that.
I swapped my old coil back in, without success.
I have no idea how to get a spark from the coil, as you suggest. I did roll the car so the lobe on the distributor shaft was at the max point and I have good points gap there.

User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Posts in this topic
moneysmarts   possible MSD disaster   Mar 8 2020, 08:36 PM
Retroracer   Some thoughts on things to check: 1) the MSD 6AL ...   Mar 8 2020, 10:48 PM
moneysmarts   Thanks Tony I used the MSD instructions to short t...   Mar 9 2020, 06:16 AM
IronHillRestorations   What engine engine and distributor, and why did yo...   Mar 9 2020, 07:09 AM
wndsrfr   Thought I'd get geared up for the spring New ...   Mar 9 2020, 07:16 AM
moneysmarts   It's a bosch 009 '74 2.0 The points are st...   Mar 9 2020, 07:25 AM
Gatornapper   There are 3 or 4 different 009 dizzy's...........   Mar 9 2020, 07:56 AM
wndsrfr   It's a bosch 009 '74 2.0 The points are s...   Mar 9 2020, 08:33 AM
moneysmarts   It's a bosch 009 '74 2.0 The points are ...   Mar 9 2020, 08:59 AM
moneysmarts   Also new plugs gapped at .7mm Same as previous set...   Mar 9 2020, 07:34 AM
moneysmarts   I can look at the part number stamp and clarify. B...   Mar 9 2020, 08:10 AM
IronHillRestorations   The green and purple wires are for a magnetic pick...   Mar 9 2020, 09:44 AM
stownsen914   Maybe try tracing spark through the system. Sounds...   Mar 9 2020, 09:59 AM
moneysmarts   Maybe try tracing spark through the system. Sound...   Mar 9 2020, 10:21 AM
Root_Werks   You mentioned you installed the MSD. If this mean...   Mar 9 2020, 10:58 AM
moneysmarts   You mentioned you installed the MSD. If this mea...   Mar 9 2020, 11:10 AM
stownsen914   Sounds like you've done the right things to tr...   Mar 9 2020, 12:51 PM


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 29th May 2024 - 01:01 AM