Backfire on deacceleration????
Thread Starter
Racer
Joined: Jul 2002
Posts: 250
Likes: 0
From: Victoria BC
Backfire on deacceleration????
When i back off the accelerater at anything over 3,000rpm I will get a single or short series of backfires out the exhaust. Any ideas as to whats causing this? No codes and otherwise runs great. Its a 92 LT1.
Race Director
Joined: Aug 2002
Posts: 13,356
Likes: 0
From: tucson AZ
St. Jude Donor '04 & '05
Re: Backfire on deacceleration???? (shane99)
Timeing...I think so. Yeah, maybe the fuel mixture. But with injectors????
Just my thoughts.
tony
:chevy :chevy
[Modified by oldace84, 4:20 PM 8/1/2003]
Just my thoughts.
tony
:chevy :chevy
[Modified by oldace84, 4:20 PM 8/1/2003]
Thread Starter
Racer
Joined: Jul 2002
Posts: 250
Likes: 0
From: Victoria BC
Re: Backfire on deacceleration???? (rsafier)
I have a bike with a header on it that does the same thing. Most guys user a PCIIIr w/ a custom map to change the timing and advance based on throttle position and rpm. So say that it may burn the valves but thats on a 200hp,
73 cid (1200cc) engine that revs to 11,500. So not the same in many respects. Its good to hear that theres no residing it will hurt this or that which was my main concern.
Oh yeah it does sound cool coming outta the Hooker Aerochambers.
[Modified by shane99, 6:08 AM 8/2/2003]
73 cid (1200cc) engine that revs to 11,500. So not the same in many respects. Its good to hear that theres no residing it will hurt this or that which was my main concern.
Oh yeah it does sound cool coming outta the Hooker Aerochambers.
[Modified by shane99, 6:08 AM 8/2/2003]
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Intermediate
Joined: Mar 2001
Posts: 33
Likes: 0
From: Houston TX
Re: Backfire on deacceleration???? (shane99)
Mine started that too. It runs great otherwise. I like the sound, because it grumbles almost like it is growling and makes a few popping sounds. If you gear it down on decceleration you can really drag it out. :yesnod: :lol:
:flag
:flag
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Re: Backfire on deacceleration???? (hotdawg1)
Mine does this very loudly now, it wasn't like this before. I can hear it over the motor at any speed, and I have glass-pak exhaust, so the car is pretty loud to begin with.
I'm sure that it's because of a blown header gasket, and a rich mixture. I have all the parts on my shelf, and in a week I'll have a garage to work in. :hurray:
I'm sure that it's because of a blown header gasket, and a rich mixture. I have all the parts on my shelf, and in a week I'll have a garage to work in. :hurray:
Le Mans Master
Joined: Apr 2002
Posts: 7,281
Likes: 5
From: Boston
Re: Backfire on deacceleration???? (GRX)
Sounds like a very rich mixture....but you say it runs good otherwise? :confused:
Later :cheers:
Le Mans Master
Joined: Aug 2002
Posts: 6,080
Likes: 3
From: Clearwater FL
St. Jude Donor '06
Re: Backfire on deacceleration???? (rsafier)
Mine does the same now that I switch over to a borla exhaust. I like the effect, at least from what I have heard it really doesn't hurt anything.
