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

Erratic idle, popping, backfiring etc.

Thread Tools
 
Search this Thread
 
Old Jan 14, 2010 | 04:18 AM
  #1  
1eyedmaro's Avatar
Thread Starter
On The Tree
iTrader: (11)
 
Joined: Mar 2009
Posts: 121
Likes: 0
From: Benton, LA
Default Erratic idle, popping, backfiring etc.

Hey guys, I am having some trouble pop up and need some help. I have searched and have not been able to find a specific answer. He is how it started:

The car started having misfire problems a while back but only when cold. As soon as the car would warm up the misfire would go away and the car would run fine. Well that misfire got worse over the past month but would still go away when warm.

The other night i tried to start the car after it sat for 3 days and it would not start. It was 14 degrees outside so i just figured it would take a second so i keep trying and eventually flooded the engine.

I checked the oil and it smelled strongly of gas so i changed it the next night. I figured i fouled the plugs and i needed to change to tr6's anyways so i changed them along with the oil. I also went ahead and installed a racetronix pump as i was needing to install it anyways.

Well the car started and i took it down the road and it still had its miss when cold but was running ok but the misfire only got worse and the car eventually started popping through the exhaust also when cruising. The car was cutting out, bucking etc. when cruising but would straighten up a bit under wot.

So i decide to put new plug wires on the car the next day...
that does nothing. I go ahead and take the opti out and apart expecting to have moisture build up but i found nothing. It looked perfect inside just as it should.

I put the car all back together and it is starting up and its cutting up at idol and still running shitty. So the only thing i can think of is fuel related problems but the pump is putting 42 out. Could i have a bad injector?? spark plug arching?

By the way the WHOLE ignition system has 4k on it.
mods are in sig. thanks
Reply




All times are GMT -5. The time now is 11:18 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE