LT1-LT4 Modifications 1993-97 Gen II Small Block V8

No Spark...?

Thread Tools
 
Search this Thread
 
Old Nov 2, 2007 | 12:39 AM
  #1  
Red96TA's Avatar
Thread Starter
12 Second Club
iTrader: (14)
 
Joined: Aug 2006
Posts: 494
Likes: 1
From: Bryant/Fayetteville, Arkansas
Default No Spark...?

I replaced my coil today and dont have spark still. When i pull #1 plug wire and put an extra spark plug in it on the header i get spark maybe once every 15 sec of cranking. Is there something besides the opti that would make it do this? I do know that my ICM is good. Would it be computer related in any way or should I just get a new opti?
Reply
Old Nov 2, 2007 | 12:35 PM
  #2  
ihaterice's Avatar
On The Tree
 
Joined: Jan 2006
Posts: 111
Likes: 0
From: Fort Collins, CO
Default

if you are getting a spark at least i doubt its the opti(could be but doubtful). but if you get a spark then the other sparks have to be going somewhere check for loose connections to the primary/secondary of the coil and the coil wire itself. if thats all good ill see what i can dig up for you.
Reply
Old Nov 2, 2007 | 12:45 PM
  #3  
Red96TA's Avatar
Thread Starter
12 Second Club
iTrader: (14)
 
Joined: Aug 2006
Posts: 494
Likes: 1
From: Bryant/Fayetteville, Arkansas
Default

It only sparks every so often. Actually less than i stated up there^^^. Right as it sparks the motor acts like its about to start then the spark stops. Its like 1 spark.
Reply
Old Nov 2, 2007 | 01:02 PM
  #4  
Hugger-96-lt1's Avatar
Launching!
iTrader: (8)
 
Joined: Sep 2007
Posts: 217
Likes: 0
From: Ft. Worth, Texas
Default

car had a similar problem. Couple wires on my harness touched the header and burned threw and they grounded so my car wouldnt want to start. Maybe wiring?
Reply
Old Nov 2, 2007 | 01:23 PM
  #5  
ihaterice's Avatar
On The Tree
 
Joined: Jan 2006
Posts: 111
Likes: 0
From: Fort Collins, CO
Default

ya check the wires all over the spark has to be going somewhere, if you are getting at least one spark i doubt its the opti. could be timing issue though or wires are shorting to ground and it just so happens that it sparks once in a while because it does not chose that path to ground.
Reply
Old Nov 2, 2007 | 01:31 PM
  #6  
Hugger-96-lt1's Avatar
Launching!
iTrader: (8)
 
Joined: Sep 2007
Posts: 217
Likes: 0
From: Ft. Worth, Texas
Default

Yeah when i would move the harness around on the ps and they would touch the header and ground my car would go dead.
Reply
Old Nov 2, 2007 | 01:34 PM
  #7  
Red96TA's Avatar
Thread Starter
12 Second Club
iTrader: (14)
 
Joined: Aug 2006
Posts: 494
Likes: 1
From: Bryant/Fayetteville, Arkansas
Default

what do you mean by ps?
Reply
Old Nov 2, 2007 | 01:50 PM
  #8  
Hugger-96-lt1's Avatar
Launching!
iTrader: (8)
 
Joined: Sep 2007
Posts: 217
Likes: 0
From: Ft. Worth, Texas
Default

passenger side
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Nov 2, 2007 | 04:15 PM
  #9  
ihaterice's Avatar
On The Tree
 
Joined: Jan 2006
Posts: 111
Likes: 0
From: Fort Collins, CO
Default

ya your shorting to something, how old are your plug wires?
Reply
Old Nov 2, 2007 | 11:42 PM
  #10  
Red96TA's Avatar
Thread Starter
12 Second Club
iTrader: (14)
 
Joined: Aug 2006
Posts: 494
Likes: 1
From: Bryant/Fayetteville, Arkansas
Default

I dont know to be honest. The car came with them when I bought them. They are MSDs. They were a little cracked in some places now that I think about it though.... How would that short out everything though? Its like I'm getting no spark at all. Once every so often. I took the opti off today and played with it a little to adjust the timing and stuck it back on and got good spark(which was a first) plugged everything back up and motor still didnt fire. Then took it off and checked it again and no spark. Im confused...
Reply




All times are GMT -5. The time now is 07:37 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE