|
Register or Log In To remove these advertisements. |
|
|
|
|||||||
 |
|
|
Thread Tools | Display Modes |
07-29-2017, 04:11 PM
|
#1 |
|
Registered User
Join Date: Jul 2017
Location: Casper
Posts: 6
|
Hei spark but no start
Hey guys I have a 72 gmc with hei. It will crank over has spark but will not start any suggestions
|
|
|
|
07-29-2017, 04:15 PM
|
#2 |
|
Moderator
 
Join Date: Jun 2017
Location: Cherryville, NC
Posts: 2,170
|
Re: Hei spark but no start
Did you just replace the original points distributor with the HEI unit and then the problem started...or has the HEI been working and then stopped suddenly...
6 cyl or V8 
|
|
|
|
|
07-29-2017, 04:27 PM
|
#3 |
|
Registered User
Join Date: Apr 2011
Location: Fairview Park, Ohio
Posts: 1,031
|
Re: Hei spark but no start
Need for info. Not much do go on there.
How did you check for spark? Is it getting fuel? What engine?
__________________
My build page http://67-72chevytrucks.com/vboard/s...d.php?t=764662 My cabinet building site http://www.cbcabinets.com |
|
|
|
|
07-29-2017, 04:31 PM
|
#4 |
|
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
|
Re: Hei spark but no start
Well if you've got spark then you're missing fuel or compression... gotta be one or more of the three!
__________________
1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
|
|
|
|
07-29-2017, 08:32 PM
|
#5 |
|
Registered User
Join Date: Jul 2013
Location: LI, NY 11801
Posts: 1,140
|
Re: Hei spark but no start
As Mark said, Spark Fuel Compression.
Spark at the right time also helps so if the point distributor was replaced by HEI, look into that. Fuel? Fresh fuel also helps... Compression? All cylinders similar pressure helps too... Bill
__________________
1970 C10 8' Fleetside, L6 250, 3 on the Tree. The most basic of pickup trucks! |
|
|
|
|
07-30-2017, 02:57 PM
|
#6 |
|
Registered User
Join Date: Jul 2017
Location: Casper
Posts: 6
|
Re: Hei spark but no start
It has spark, good gas, and good compression. It will sputter a little right as I start cranking then nothing. I replaced the hei distributor that was already on the truck
Last edited by Jase lummus; 07-30-2017 at 03:05 PM. |
|
|
|
|
07-30-2017, 03:13 PM
|
#7 |
|
Registered User
Join Date: Nov 2014
Location: Lincoln City DE
Posts: 1,292
|
Re: Hei spark but no start
timing ?
__________________
Stan 67 swb BLU MULE posted via flip-fone |
|
|
|
|
07-30-2017, 03:18 PM
|
#8 |
|
Registered User
Join Date: Jul 2017
Location: Casper
Posts: 6
|
Re: Hei spark but no start
I can't count how many times I've timed and retimed
|
|
|
|
|
07-30-2017, 03:36 PM
|
#9 |
|
Senior Member
 
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,848
|
Re: Hei spark but no start
Yep... timing.
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson |
|
|
|
|
07-30-2017, 03:41 PM
|
#10 |
|
Registered User
Join Date: Nov 2014
Location: Lincoln City DE
Posts: 1,292
|
Re: Hei spark but no start
check plugs
__________________
Stan 67 swb BLU MULE posted via flip-fone |
|
|
|
|
07-30-2017, 04:44 PM
|
#11 |
|
Registered User
Join Date: Jun 2013
Location: Somewhere
Posts: 3,066
|
Re: Hei spark but no start
Gas squirting from the squirters? Get a can of spray B12 , open the throttle, shoot some down its throat, crank.
|
|
|
|
|
07-30-2017, 04:52 PM
|
#12 |
|
Moderator
Join Date: Jun 2017
Location: Cherryville, NC
Posts: 2,170
|
Re: Hei spark but no start
Why did you replace the original HEI distributor? Same issue ?
This sounds like a bad ignition switch...bypass the switch or try another switch... I have seen these ignition wiring plugs melt at the back of the switch... I know you have checked timing...maybe time to start again from basics... Bring cyl 1 to TDC on compression...make sure rotor is aligned with correct cap port for cyl 1... BTW...was this truck originally a standard points style distributor? You do know if it was the power wire drops voltage down and needs to be replaced when you install HEI...
|
|
|
|
|
07-30-2017, 04:56 PM
|
#13 |
|
Registered User
Join Date: Jul 2016
Location: Moravia ny
Posts: 49
|
Re: Hei spark but no start
Would the HEI be connected to original coil wire? Voltage would be low but would have spark and perhaps not start.
|
|
|
|
|
07-30-2017, 05:17 PM
|
#14 |
|
Registered User
Join Date: Jul 2017
Location: Casper
Posts: 6
|
Re: Hei spark but no start
Ive already replaced the ing wire
|
|
|
|
|
07-31-2017, 08:43 AM
|
#15 |
|
Registered User
Join Date: Feb 2012
Location: Vinton, Va.
Posts: 473
|
Re: Hei spark but no start
It sounds like you just replaced the HEI dizzy. 9- outta 10 times if a new symptom arrives immediately after doing something like that, then that part or installation is the culprit. If you had access to another dizzy, that would be a quick dbl check of the "new" Hei. It's easy to "overthink" things, I do it all the time. Start simple, at the beginning. And why was the HEI replaced? Symptoms?
|
|
|
|
|
07-31-2017, 09:23 AM
|
#16 |
|
Registered User
Join Date: May 2013
Location: WEST PALM FLORIDA
Posts: 1,174
|
Re: Hei spark but no start
dizzy 180 degrees out ?
__________________
68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs 67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive 58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white 69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive |
|
|
|
|
07-31-2017, 11:40 AM
|
#17 | |
|
Registered User
Join Date: Jul 2017
Location: Asheville NC
Posts: 36
|
Re: Hei spark but no start
Quote:
|
|
|
|
|
|
08-01-2017, 07:09 PM
|
#18 |
|
Registered User
Join Date: Jul 2017
Location: Casper
Posts: 6
|
Re: Hei spark but no start
Someone rebuilt the carb with mixed parts thanks guys
|
|
|
|
|
| Bookmarks |
|
|
Linear Mode
