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#353359 Dec 16, 11:12pm
Joined: Sep 2004
Posts: 411
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2000 Toyota Celica GTS
Senior Member
2000 Toyota Celica GTS
Joined: Sep 2004
Posts: 411
I get backfires every now and then...especially right when i shift gears. its not too loud, but i know its backfire. Is too much backfire bad. What causes it and how can i avoid it?


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AzNRaCeR #353360 Dec 16, 11:37pm
Joined: Aug 2004
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2000 Toyota Celica
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2000 Toyota Celica
Joined: Aug 2004
Posts: 1,029
have the same problem.. once awhile confused


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kmlgts #353361 Dec 17, 12:56am
Joined: Aug 2004
Posts: 52
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2000 Toyota Celica
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2000 Toyota Celica
Joined: Aug 2004
Posts: 52
let me guess, you have an exhaust, with out headers right...? and maybe even an intake! hummmmm... well like everyone out there who is wondering what causes back fire...! when you only have an exhaust and no headers, all the air is force out when you step on gas of course, and without headers, the stock headers is not the same diameters as the new exhaust... while the air pushing out, when you shift, a good amount of air goes back in with the air pressure pushing out...!

simple as this: Gas, force air out--- you shift--- air in and then out again when you gas again...!


a bowl of rice, fried chicken, and a glass of water!

Joined: Aug 2004
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FAT CAT
2000 Toyota Celica GT
FAT CAT
2000 Toyota Celica GT
Joined: Aug 2004
Posts: 686
my kazuma backfires constantly, but with the kazuma its to be expected.

Joined: Nov 2003
Posts: 753
Senior Member
Senior Member
Joined: Nov 2003
Posts: 753
my car backfires a lot even more when i have my a/c on...sounds like my car is gargling or somethin hahaha

Joined: Dec 2003
Posts: 2,670
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2003 Toyota Celica
Specialist
2003 Toyota Celica
Joined: Dec 2003
Posts: 2,670
my TRD sport muffler does it too... spineyes

Joined: Jun 2004
Posts: 1,337
Specialist
2002 Toyota Celica
Specialist
2002 Toyota Celica
Joined: Jun 2004
Posts: 1,337
never had the probelm with intake and custom exhaust factoyr headers-anywhats up with the tpr headers??


respect the gt-s

Joined: Sep 2004
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2004 Toyota Celica
Senior Member
2004 Toyota Celica
Joined: Sep 2004
Posts: 895
Originally Posted by BlkCelicaGT07
my kazuma backfires constantly, but with the kazuma its to be expected.


...luv it when the bad boy b.fires!!!!!!!!!! grin

Joined: Apr 2004
Posts: 404
Turbonator
2000 Toyota Celica
Turbonator
2000 Toyota Celica
Joined: Apr 2004
Posts: 404
my car backfires also, kinda annoying,

the possible problems are
1. bad spark plugs but they are iridium so most likely not
2. bad tank of gas but happens with more than 1 fill up
3. bad spark plug wires but the 7th gen have Electronic ignition so i cant be that.
4.
Originally Posted by toysport_celica
simple as this: Gas, force air out--- you shift--- air in and then out again when you gas again...!
5. anybody else want to add to the list to what the problem might be please do so we can possibly find the cause and fix the problem.

Last edited by importcarbabe; Dec 17, 2004 10:02am.

"If you dont like Hair blowers why would you like Turbo's"
Last car '92 Eagle Talon TSI AWD, R.I.P, Current car '00 Toyota Celica GT-S. Next car Fully Built 1st Gen AWD DSM.

Joined: Jul 2004
Posts: 23
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2003 Toyota Celica
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2003 Toyota Celica
Joined: Jul 2004
Posts: 23
I have the same problem. I have an Injen SRI and an Injen axel-back exhaust. If you keep the RPMs up when you shift, you won't notice it as much.

Joined: Sep 2004
Posts: 411
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2000 Toyota Celica GTS
Senior Member
2000 Toyota Celica GTS
Joined: Sep 2004
Posts: 411
i heard it has something to do with unburned gas being burned in the exhaust/headers. Thats why im worried...unburned gas...


GATOR HATOR! GO FSU NOLES!!!

AzNRaCeR #353370 Dec 21, 11:46am
Joined: Mar 2004
Posts: 647
Senior Member
2001 Toyota Celica GT
Senior Member
2001 Toyota Celica GT
Joined: Mar 2004
Posts: 647
i use to have this problem too, it was sooo annoying. i put a aftermarket resonator on my car to shut it up and the backfire went away also. but now my car is almost as quiet as stock. if it wasnt for my intake my car would sound so weak..and after putting so much money into my exauhst i would have been mad. but i guess putting some headers on should fix this?

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