No Spark Help - JeepForum.com
 
LinkBack Thread Tools
post #1 of 6 Old 01-16-2010, 05:50 PM Thread Starter
Woolys_CJ7
Registered User
1976 CJ7 
 
Join Date: Apr 2009
Location: Chandler, AZ
Posts: 27
No Spark Help

I just finished rebuilding the top end of the 304 and everything is back together and hooked up as before when it was running. Engine turns over fine but we have no spark, checked at the number 1 cylinder and then from the coil to the distributer, no spark at either location.

I then followed the Chilton manual as best as I understood the trouble shooting procedure. What I found at the coil with the ohm meter was battery voltage from the positive terminal of the coil to ground, which is what the manual says is correct. Then I tested the negative side, have battery voltage, supposed to have 5 to 8 volts, further testing on coil made me question the coil and I purchase a new one. I still have battery voltage on the negative terminal, and no spark from the coil, check by turning engine over with ignition on and holding coil wire inch from a ground.

Looking for ideas and testing procedural help.

Thanks in Advance,
Wooly

Woolys_CJ7 is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old 01-16-2010, 09:04 PM
TBailey
Registered User
1983 CJ7 
 
Join Date: Dec 2009
Location: Pensacola,FL
Posts: 305
you my want to check your ignition module,I think most auto parts stores can test them for you
TBailey is offline  
post #3 of 6 Old 01-16-2010, 09:36 PM
VACJ7
Hockey Rules!
 
VACJ7's Avatar
1984 CJ7 
 
Join Date: Jul 2008
Location: Northern Virginia
Posts: 3,783
Does your '76 use the Prestolite ignition? Jeephammer has some general testing procedures here and more specific info for the Prestolite: http://www.jeepforum.com/forum/f8/i-...0/#post7068393
VACJ7 is offline  
post #4 of 6 Old 01-17-2010, 07:02 AM Thread Starter
Woolys_CJ7
Registered User
1976 CJ7 
 
Join Date: Apr 2009
Location: Chandler, AZ
Posts: 27
Thank you the link to Jeephammers write up was exactly what I was looking for!
Woolys_CJ7 is offline  
post #5 of 6 Old 01-17-2010, 03:09 PM Thread Starter
Woolys_CJ7
Registered User
1976 CJ7 
 
Join Date: Apr 2009
Location: Chandler, AZ
Posts: 27
Result, it was the factory plug from the module into the harness no longer making a good connection. A little electrical contact cleaner followed up with dialectic grease and problem solved. Now to fix the exhaust leak.

Thanks
Woolys_CJ7 is offline  
post #6 of 6 Old 01-17-2010, 08:22 PM
jfwireless
Registered User
1976 CJ7 
 
Join Date: Apr 2007
Location: Naples, FL
Posts: 1,417
Well if you still have that original Presolite distributor and ignition, time to change that out.

Jim
jfwireless is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com 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 e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
No spark from distributor to spark plugs poolshark909 Jeep CJ Forum 14 08-06-2013 04:36 PM
67 CJ6 w/V6 - no spark cghsatx Jeep CJ Forum 6 09-05-2009 10:19 PM
no spark! trueprimitive Jeep CJ Forum 7 08-26-2009 12:52 PM
304 has no spark? 1974cj5renagade Jeep CJ Forum 0 01-04-2009 12:45 PM
No Spark to the spark plugs Dandude80cj7 Jeep CJ Forum 6 09-11-2005 09:02 PM

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 Off
Pingbacks are On
Refbacks are On

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