HEI No Spark - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Electrical
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 04-03-2010, 12:25 PM
Registered User
 
Last photo:
Join Date: Apr 2010
Location: VA
Posts: 2
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
HEI No Spark

Hey guys,

I have a Model A coupe I'm working on with a 4 banger Model A motor. I am changing over to 12 volts and had a old Mallory distributor converted to electronic with a relector and pickup coil that is fired with an external HEI module. The problem is I'm getting no spark. The motor turns over fast, but still no spark. I have all new parts, new coil, new battery and everything. The only part that is still 6 volt is the starter, which I'm told doesn't matter or care that its 6 volt or 12 volt.

I'm including a picture of my wiring. I have the most basic wiring I can get to rule out any problems. I talked to the guy who did the distributor and asked about the spark plug wires which are the old style cloth wrapped wires but he said that wouldn't matter either.

Is there anything I can test or rule out that might be a problem? Any tips or help would be appreciated. Thanks.


    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-05-2010, 06:28 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
There should be a third wire running to the coil "+" terminal that supplies switched voltage for the ignition.

The "+" wire coming up from the starter (attached to the solenoid "I" terminal) isn't needed. In a points-type ignition, this wire would supply full battery voltage to the coil for starting, then would switch (when the started was disengaged) of the running voltage (less than full battery) to the coil.

IIRC, in your case, an internal resistor equipped coil would be what you want, as opposed to a coil that requires an external ballast.

It's possible that "W" and "G" need reversed, or you got a bad module. Not too likely, though.

The pickup coil and reluctor is compatible w/the HEI? The gap set correctly?

Last edited by cobalt327; 04-05-2010 at 06:58 AM.
Reply With Quote Quick reply to this message

Recent Electrical posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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 for yourself.
Email Address:

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

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
HEI Distributor, no spark think I tried everything bradster79 Engine 14 07-25-2011 10:06 AM
Sbc 350 Hei. Ran Great. Now No Spark stubborn72k20 Electrical 5 01-18-2010 01:27 PM
Sbc 350 Hei. Ran Great. Now No Spark stubborn72k20 Engine 2 01-17-2010 11:22 PM
Weird HEI distributor problem . no spark ErrorS Electrical 5 11-05-2009 12:48 PM
Ignition system info................ poncho62 Electrical 18 10-11-2008 10:10 PM


All times are GMT -6. The time now is 10:26 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.