No Spark - Team Camaro Tech
Electrical & Wiring Troubleshooting electrical.

 
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post #1 of 8 (permalink) Old Jan 16th, 08, 05:36 PM Thread Starter
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Mike
 
Join Date: May 2006
Location: Tacoma, WA
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No Spark

Hi,

I tried to start the baby today and no diggity.
It has sat for a few months.

I have a MSD blaster SS coil and a MSD pro billet dist.

I am definitely getting no spark, the rotor is definitely turning and I get 13-14 volts to the coil. I measured from one post to ground and got the 13 volts and the other post to ground and got the same.
But between posts, there is no voltage difference. With both probes on the posts, there was 0 volts.

So I'm pretty sure the problem lies in the coil or the dist or the wires in between.

How do I check a coil for function?
How do I confirm that the coil is sending what it needs to send to the distributor?

Thanks for what help I can receive on this!
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post #2 of 8 (permalink) Old Jan 16th, 08, 06:49 PM
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Location: Austin, TX, USA
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Re: No Spark

Your measurements may be normal and I don't think they necessarily mean the coil is bad. When the ignition system fires the coil, it'll briefly ground one terminal and then release the ground to fire the spark. Sitting still the ignition controller won't be pulsing and you'll get the readings you found. Essentially those readings indicate that 12volts is being supplied and that it is flowing through the coil primary, but the primary coil isn't being grounded to cause current to flow - most likely normal for sitting still.

Dave
========================
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #3 of 8 (permalink) Old Jan 16th, 08, 07:07 PM
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Jim
 
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Re: No Spark

Double check the wiring into the distributor, make sure it has 12 volts. And ground.





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post #4 of 8 (permalink) Old Jan 17th, 08, 08:21 AM Thread Starter
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Mike
 
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Re: No Spark

Where on the distributor do I check for voltage and how much should be there?
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post #5 of 8 (permalink) Old Jan 17th, 08, 11:26 AM
 
Join Date: Apr 2005
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Re: No Spark

I pretty much have the same setup you have and this past weekend, I went to fire mine up and no go. I was getting no spark. After much troubleshooting, I cleaned the dist cap with WD-40 and then a contact cleaner to dry every thing out. During this I noticed a small build up on the brass pieces in the dist cap. These were cleaned,(slightly sanded) bac to the brass color and the car fired right up. Check the dist cap for moisture (WD-40 and contact cleaner) and clean the brass pieces in the dist cap and see if this helps. Like yours my car had sat for several months as well. I supposed the moisture and slight build up kept it from firing. All is good now!!!!!

Last edited by orange 68; Jan 17th, 08 at 11:40 AM. Reason: typo
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post #6 of 8 (permalink) Old Jan 17th, 08, 12:16 PM Thread Starter
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Mike
 
Join Date: May 2006
Location: Tacoma, WA
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Re: No Spark

Quote:
Originally Posted by orange 68 View Post
I pretty much have the same setup you have and this past weekend, I went to fire mine up and no go. I was getting no spark. After much troubleshooting, I cleaned the dist cap with WD-40 and then a contact cleaner to dry every thing out. During this I noticed a small build up on the brass pieces in the dist cap. These were cleaned,(slightly sanded) bac to the brass color and the car fired right up. Check the dist cap for moisture (WD-40 and contact cleaner) and clean the brass pieces in the dist cap and see if this helps. Like yours my car had sat for several months as well. I supposed the moisture and slight build up kept it from firing. All is good now!!!!!
DUDE!!!!!!!

That sounds so logical I feel stupider than I really am!!

I'm going to do that as soon as I get home!
I was trying to figure out how my coil, brand new this last summer could already be out.

I will do this and report right back to tell any tales....

Thanks,

Mike
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post #7 of 8 (permalink) Old Jan 17th, 08, 04:13 PM
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Re: No Spark

I have this same distributor and the same thing happened to me. I pulled it out and sent it back to msd to have it checked. they sent it back to me a couple weeks later with a note saying they could not find anything wrong. I reinstalled it, ran a good ground and it started right up. I would have never suspected it lost a ground after driving it the previous summer with no problems. wnk.
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post #8 of 8 (permalink) Old Jan 18th, 08, 12:20 PM Thread Starter
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Mike
 
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Re: No Spark

Quote:
Originally Posted by dusted800 View Post
I have this same distributor and the same thing happened to me. I pulled it out and sent it back to msd to have it checked. they sent it back to me a couple weeks later with a note saying they could not find anything wrong. I reinstalled it, ran a good ground and it started right up. I would have never suspected it lost a ground after driving it the previous summer with no problems. wnk.
So do you think it lost its ground or was just damp?
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