hei problems - 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> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 06-15-2012, 06:04 PM
Registered User
 
Join Date: May 2007
Location: california
Age: 45
Posts: 17
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
hei problems

I have a 63 chevy c 10 pick up with a fairly new gm 350 crate motor. Recently the truck died on the freeway with no warning. Would not restart. I removed the distributor cap only and reinstalled. Truck started right up. This has happened about 5 times in the last week. The truck has also been having intermittent problems with it wanting to die when I stop really fast. As if fuel floats are not set right. Then out of the blue it runs fine again, except for the engine just quitting. I checked the ignition switch and it is fine. Seems to me that it is def HEI related. Does it sound like the module? Any help would be appreciated

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 06-15-2012, 06:05 PM
Registered User
 
Join Date: May 2007
Location: california
Age: 45
Posts: 17
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
The fuel pump and fuel pressure are good also.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 06-15-2012, 06:22 PM
Custom10's Avatar
my KARMA ran over my DOGMA
 

Last journal entry: SS
Last photo:
Join Date: May 2009
Location: Saskatchewan, Canada
Age: 49
Posts: 1,097
Wiki Edits: 0

Thanks: 16
Thanked 28 Times in 24 Posts
With the cap removal fixing it I would suggest checking the wiring under the coil cover, take the cover off and check the coil wiring and stake on type connectors that accept the power plug end if so equipped

Check for engine proper ground
Ensure that the HEI gets constant 12VDC+
Yes the module can heat up and get flaky causing intermittent operation
The coil itself can be weak

If you have another HEI cap and coil install it and see what gives.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 06-15-2012, 07:30 PM
cool rockin daddy's Avatar
1.21 giga-watts???!!!!
 
Join Date: Aug 2003
Location: wherever cool cars are
Posts: 1,535
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
That little carbon button under cap might be out of place or the washer under it is bad. Carbon tracking near it can cause misfires. Check it also.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 06-15-2012, 08:47 PM
Registered User
 
Join Date: Nov 2004
Location: California
Age: 67
Posts: 828
Wiki Edits: 0

Thanks: 27
Thanked 21 Times in 19 Posts
Years ago I had a small Hemi in a model A. I had a similar problem. When the dist advanced it pulled a wire to ground, and the engine quit. It was a points setup, but I suggest you look at the distributor internal wiring and make sure nothing is hooking it, or nothing is rotating causing wires to contact ground. The way HEI advance works, I doubt this is your problem, but if something in the distributor is amuck in this way, it'd sure be a cheap and easy fix.

PatM
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 06-15-2012, 08:50 PM
Banned User
 
Last photo:
Join Date: May 2011
Location: N.E.
Posts: 385
Wiki Edits: 0

Thanks: 9
Thanked 6 Times in 6 Posts
What is the age of the distributor? It could also be the wires (green and white?) on the pickup. They sometimes go bad from all the movement?
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 06-16-2012, 01:17 AM
ronbuhg's Avatar
Registered User
 
Join Date: May 2012
Posts: 35
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
Quote:
Originally Posted by against all odds
What is the age of the distributor? It could also be the wires (green and white?) on the pickup. They sometimes go bad from all the movement?
all of the above answers are good, my experience has usually turned out to be a bad module caused by what they used to call 'heat soak',working fine when cool, quitting when hot. hey guys which rotor was it that used to burn through quicker ?the white or black one.cant remember, I 'think' it was black ?also quitting when doing a panic stop,up your idle speed slighty,sounds like its too low, 50-100 rpms maybe should fix that,if floats are off you would have problems all over the place,not just when stopping

Last edited by ronbuhg; 06-16-2012 at 01:22 AM.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 06-16-2012, 10:17 AM
Registered User
 
Join Date: May 2007
Location: california
Age: 45
Posts: 17
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Changing out the module today. Bought one of those ignition tune up kits from pro form. The coil seems a bit weak also. Going to do a complete ignition tune up. Thanks for all the replies.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 06-16-2012, 02:26 PM
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
Quote:
Originally Posted by push rod
Changing out the module today. Bought one of those ignition tune up kits from pro form. The coil seems a bit weak also. Going to do a complete ignition tune up. Thanks for all the replies.
Use heat sink compound from Radio Shack or a computer repair store to put under the module. That compound allows heat to pass from the module into the distributor body. One type is shown here.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 06-16-2012, 02:45 PM
T-bucket23's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Engine basic condition - how to check Last photo:
Join Date: Aug 2005
Location: Massachusetts
Age: 57
Posts: 5,212
Wiki Edits: 26

Thanks: 7
Thanked 116 Times in 101 Posts
Quote:
Originally Posted by push rod
Changing out the module today. Bought one of those ignition tune up kits from pro form. The coil seems a bit weak also. Going to do a complete ignition tune up. Thanks for all the replies.
Do your self a favor, send back the pro form crap and get some AC Delco parts.
As to your original issue. I would check the connections on the outside of the cap. It could just be when you remove and reinstall the cap you are moving the connections enough for them to make again. Also take the rotor off and see if it is burnt through in the middle.
__________________
Artificial Intelligence is no match for Natural Stupidity



Chet
Reply With Quote Quick reply to this message

Recent Engine 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 problems usa3990 Electrical 3 09-16-2010 03:42 PM
HEI and Manifold fitment problems BowTiePride Engine 12 03-04-2010 02:33 PM
stock HEI to Small body HEI now there's problems, need help Doc fat50chevy Electrical 6 07-13-2006 03:19 PM
HEI problems--- help blownalkybbc Electrical 8 07-01-2006 09:23 PM
HEI problems Marcus Electrical 6 12-29-2002 07:22 PM


All times are GMT -6. The time now is 11:01 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.