Bad coil? - Team Camaro Tech
Electrical & Wiring Troubleshooting electrical.

 
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old Apr 9th, 10, 05:14 PM Thread Starter
 
Join Date: May 2004
Location: Bakersfield California
Posts: 19
Bad coil?

I have 12 volts to my coil when ignition is on, I have checked the ground and it's good but I don't have a spark leaving the coil. I know I probably stating the obvious that the coil is bad but what fails inside the coil. (I'm a rank amature but I'm trying to learn).
Kwondo1967 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old Apr 9th, 10, 06:50 PM
Gold Lifetime Member
Rick
 
Join Date: Jul 2004
Location: Yreka, CA
Posts: 346
Re: Bad coil?

I am not sure how you are checking for spark...if just grounding the coil wire and looking for spark, make sure the wire is good.

Rick
68 project...reassembly starting: (383, AFR 195, Air Gap, Comp Cam XR276HR, 1.6 CC Gold rollers, Holley 750, 4/09) (TKO 600 conversion from T350 4/09) (floor pan restored 6/09). (12 bolt 3.73, Wilwood disc, Hotchkis TVS 7/09), Dougs 368 with Big Dog mufflers (9/09), 383 fired up 9/30/09, Candy Apple Red 2012 with white RallyBee stripe
dukemd66 is offline  
post #3 of 4 (permalink) Old Apr 9th, 10, 10:38 PM
Senior Tech
 
Join Date: Jul 2005
Location: California
Posts: 2,353
Re: Bad coil?

Its grounding and breaking the ground that creates a spark when the magnetic field collapses.

Make sure you power to the positive side of the coil and check for voltage to be fluctuating on the negative side of the coil while cranking.
If you have a constant 12 volts on the negative side of the coil while cranking the problem is not the coil.
400bird is offline  
 
post #4 of 4 (permalink) Old Apr 10th, 10, 05:37 AM
Gold Lifetime Member
Jim
 
Join Date: Dec 1999
Location: Yorkville, Illinois USA
Posts: 22,121
Re: Bad coil?

Quote:
Originally Posted by 400bird View Post
Its grounding and breaking the ground that creates a spark when the magnetic field collapses..
Exactly.

To test a coil connect 12v to the + terminal
Using a jumper wire, ground the - terminal.

When you release the ground on the - terminal, the coil will generate a spark.





To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
New website for my vert is coming together. Do ya like the slide show on the home page?
JimM is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome