C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Running rough (backfiring)

Old Apr 2, 2010 | 06:19 PM
  #1  
foley59's Avatar
foley59
Thread Starter
Heel & Toe
 
Joined: Mar 2006
Posts: 15
Likes: 0
From: Fredericksburg VA
Default Running rough (backfiring)

Had American Racing headers, high flow cats, Vararam, 160 degree stat and dynotuning done at ECS 2 weeks ago. Drove back to Virginia and drove a couple of times since with no problems. Just took it out of garage and drove a few miles and suddenly car was barely running and backfiring. Check engine light was flashing. Sounded like it was missing real bad. Have not drove it hard at all since upgrades other than a little spirited. Any ideals? ECS was closed when I called.
Reply
Old Apr 2, 2010 | 08:35 PM
  #2  
foley59's Avatar
foley59
Thread Starter
Heel & Toe
 
Joined: Mar 2006
Posts: 15
Likes: 0
From: Fredericksburg VA
Default

Started car a couple hours later. Still running a little rough without backfiring. Smell fuel as if running rich. Any ideals?
Reply
Old Apr 2, 2010 | 08:41 PM
  #3  
carlrx7's Avatar
carlrx7
Safety Car
10 Year Member
 
Joined: Feb 2008
Posts: 3,712
Likes: 3
From: TEXOMA
St. Jude Donor '08-'09
Default

while your waiting to get ahold of doug, try disconnecting the battery for like 10 mins or so. then try again after reconnecting it.
Reply
Old Apr 2, 2010 | 08:50 PM
  #4  
bob guzzy's Avatar
bob guzzy
Safety Car
20 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Jan 2006
Posts: 3,940
Likes: 43
From: shavertown Pa.
Default

Check your plug wires one could have walked off one of the coils.
Reply
Old Apr 2, 2010 | 08:57 PM
  #5  
adamb258's Avatar
adamb258
Advanced
 
Joined: Sep 2008
Posts: 97
Likes: 0
Default

check things that are easy to see, especially with the vararam. make sure one of the fitting didn't slide off letting air in for example. Check the plug wires as it could have easily gotten a tug during headers install and walked off during driving. Pretty much give a look over anything that is near or around anything that was modified.
Reply
Old Apr 3, 2010 | 11:13 AM
  #6  
foley59's Avatar
foley59
Thread Starter
Heel & Toe
 
Joined: Mar 2006
Posts: 15
Likes: 0
From: Fredericksburg VA
Default

Had a chance to look at it today versus dark and engine too hot last night. Looks like one of the plug wires came off. Didn't notice it in the dark. Don't do much automotive work theses days but still feel confident in most task. A little help from the forum from the more experienced is always a plus. Thanks for the help. I'm sure it won't be the last because I've been a vette owner for 8 years and don't see that changing.
Reply

Get notified of new replies

To Running rough (backfiring)



Thread Tools
Search this Thread

All times are GMT -4. The time now is 08:34 PM.

story-0
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-2
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-3
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-4
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-5
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-6
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-7
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-8
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-9
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE