Question About Back Fire
lost u already???
Joined: Apr 2005
Posts: 836
Likes: 0
what did you do to your exhaust... anything at all? back fire usually comes from gas that was left over and burned up late. you need to look into getting a fuel pressure regulator like they said and getting your car tuned a bit. back fire occurs often, but most people have very restrictive cat's which dont allow you to hear the back fire. back fire isnt bad but means you are not placing the right amount of gas.
aka The Twanksta!
Joined: Oct 2004
Posts: 3,790
Likes: 0
hmmm, I backfire like a mother under hard decel or at partial throttle while decelerating. I can almost do it on command.
Oh, and I SHOOT FIREBALLS!
I always had this question in my head too, I firgured it wasnt nothing real harmful but maybe a tune issue.
Oh, and I SHOOT FIREBALLS!
I always had this question in my head too, I firgured it wasnt nothing real harmful but maybe a tune issue.
__________________
Registered User
Joined: Jul 2005
Posts: 982
Likes: 0
Could be lean backfires or rich backfires. Usually you can tell by the sound. Bad spark, vaccum leaks, sensor issues (are you throwing any engine codes) allo possible causes.
Lean backfiring is too much air in the fuel mix and rich is just the opposite.
Lean backfiring is too much air in the fuel mix and rich is just the opposite.
Registered User
Joined: Mar 2005
Posts: 3,651
Likes: 0
a lean backfire would be called detonation. which is bad for any car. if you car is detonating, i suggest not to drive it hard.
what kinda of upgrades have you done to the car/motor?
what kinda of upgrades have you done to the car/motor?
Originally Posted by civicized
Could be lean backfires or rich backfires. Usually you can tell by the sound. Bad spark, vaccum leaks, sensor issues (are you throwing any engine codes) allo possible causes.
Lean backfiring is too much air in the fuel mix and rich is just the opposite.
Lean backfiring is too much air in the fuel mix and rich is just the opposite.
__________________
Guest
Posts: n/a
Originally Posted by FC_V8
a lean backfire would be called detonation. which is bad for any car. if you car is detonating, i suggest not to drive it hard.
what kinda of upgrades have you done to the car/motor?
what kinda of upgrades have you done to the car/motor?
A backfire can be caused by many things. GENERALLY you do not get rich backfires.
A backfire is caused by something igniting the left over mixture of gas and exhaust in the tailpipe. High egt's(or a lean condition) can cause backfires. Sometimes this can be caused by a leak in the exhaust pipe somewhere along the line. As generally there is no air in the exhaust to allow the ignition of the hot exhaust/gas mixture in the tailpipe.
So with out air, you cannot have ignition. Hence, you more then likely have a hole in your exhaust.
Something else I wanted to add. If you have a cylinder that is dead, or weak, this can cause backfires, because the air/fuel mixture never got a chance to ignite in the chamber - this is what you would refer to as a "rich" backfire.
aka The Twanksta!
Joined: Oct 2004
Posts: 3,790
Likes: 0
Originally Posted by Cronic
Something else I wanted to add. If you have a cylinder that is dead, or weak, this can cause backfires, because the air/fuel mixture never got a chance to ignite in the chamber - this is what you would refer to as a "rich" backfire.
__________________
aka The Twanksta!
Joined: Oct 2004
Posts: 3,790
Likes: 0
Replaced both, same problem. Ive been told its my rotor in my distributor, which is the one thing I havent replaced yet, so Im gonna give that a whirl.
__________________
lost u already???
Joined: Apr 2005
Posts: 836
Likes: 0
Originally Posted by The Twanksta
Replaced both, same problem. Ive been told its my rotor in my distributor, which is the one thing I havent replaced yet, so Im gonna give that a whirl.
