my car backfires alot when im drivin or downshifting from the muffler.. ? why?

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Old Aug 27, 2002 | 02:25 PM
  #1  
civicracer1993's Avatar
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From: Reading, PA
Default my car backfires alot when im drivin or downshifting from the muffler.. ? why?

well when i push my gears hard or downshift and let the car slow itself down it throws little fireballs from the muffler? why? is this gonna hurt anything?

mike
its a DX with straight pipe 2" exhaust and a cherry bomb muffler.
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Old Aug 27, 2002 | 02:28 PM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (civicracer89)

heheheheheheheh sweeeet.
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Old Aug 27, 2002 | 03:12 PM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (NikoZai)

i like it but your car is probably running rich but fire is chool ha ha right butthead yea yea yea chooool
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Old Aug 27, 2002 | 08:37 PM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (XtraFastCRX)

NO back pressure will make it do this also. And since you said you have Straight Pipe then that is no building much Back pressure also if you dont have a cat then any un-burned fuel is just escaping out the exhuast causing the Fireballz as you call them. This will not hurt anything.
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Old Aug 27, 2002 | 08:46 PM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (ED6)

what about little backfire during idle just lilttle pops
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Old Aug 27, 2002 | 08:49 PM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (civicracer89)

sounds pretty tight
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Old Aug 27, 2002 | 08:53 PM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (grncivic91)

gotta love backfire...my crx did that for a lil bit....my mini bike does that and spits little fireballs.....sounds kinda like a harley
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Old Aug 27, 2002 | 11:59 PM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (ED6)

when i downshift, my exhaust shoots out a puff of white smoke. what gives? 2.25" custom, cat, and magnaflow.
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Old Aug 28, 2002 | 12:08 AM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (mindtrix)

white smoke ur running rich. black smoke u got oil leaking in ur engine. the pop sound, sounds pretty crazy i hear someone ppl with that pop sound scare my *** sometimes n ****. some of them got fire coming out. is that becuz they using the spark plug under the exhaust
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Old Aug 28, 2002 | 12:59 AM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (Ignitecivic)

white smoke ur running rich. black smoke u got oil leaking in ur engine. the pop sound, sounds pretty crazy i hear someone ppl with that pop sound scare my *** sometimes n ****. some of them got fire coming out. is that becuz they using the spark plug under the exhaust
what ******* herion shooting monkey loving mechanic lied to you?

White Smoke = Coolant
Black Smoke = Rich
Blue/White smoke = Oil, Oil+Coolant
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Old Aug 28, 2002 | 01:02 AM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (Accord94DX)

what ******* herion shooting monkey loving mechanic lied to you?

White Smoke = Coolant
Black Smoke = Rich
Blue/White smoke = Oil, Oil+Coolant

hhahahahhahhahahahahhahahahh
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Old Aug 28, 2002 | 05:30 AM
  #12  
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (Accord94DX)

what ******* herion shooting monkey loving mechanic lied to you?

White Smoke = Coolant
Black Smoke = Rich
Blue/White smoke = Oil, Oil+Coolant
Second that!
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Old Aug 28, 2002 | 07:31 AM
  #13  
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (JDM EF9)

3rd thaty!!!

ive have all of the above shoot from my exhaust!!
and she still runs strong!! hehe

dam the kid wasnt lieing when he said i had fire shooting out my exhaust!! i thought he was kidding cuz i beat him so badly..
coolness me can do it toooo!
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Old Aug 28, 2002 | 11:31 AM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (civicracer89)

Mine pops after shifting up or down sometimes and I'm not running rich, in fact, I get it more when I lean it out. I have a cat and 2" piping to a straight through muffler. What is this. And the guy that had the smoke colors all wrong is smoking crack, again... he's a monkey boy .


[Modified by technine, 8:32 PM 8/28/2002]
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Old Aug 28, 2002 | 11:41 AM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (technine)

actually the flames could mean your running extremely lean

have a friend watch the color of the flames

yellow = lean ...bad!

blue= rich...better than yellow!


yea because if your running lean your motor is running really hot ...fuel cools down the exhaust temps and not enough fuel will cause hot EGT's ...hott enough to ignite the fuel mixture....so flames doesnt necessarily mean rich and good

look at the color
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Old Aug 28, 2002 | 12:15 PM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (Accord94DX)

white smoke ur running rich. black smoke u got oil leaking in ur engine. the pop sound, sounds pretty crazy i hear someone ppl with that pop sound scare my *** sometimes n ****. some of them got fire coming out. is that becuz they using the spark plug under the exhaust

what ******* herion shooting monkey loving mechanic lied to you?

White Smoke = Coolant
Black Smoke = Rich
Blue/White smoke = Oil, Oil+Coolant
heheheheh

my ***** been poping a lot lately as well. i have a fuct o2 sensor and the ecus dumping fuel because of it. dunno ive gotten any fireballs but ive had some good bangs come out of it. oh yeah, car runs like *** now


[Modified by TorteX, 3:16 PM 8/28/2002]
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Old Aug 28, 2002 | 01:29 PM
  #17  
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (civicracer89)

dude that sounds pretty bad ***. i wish fireballs shoots out of my exhuast!
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Old Aug 28, 2002 | 02:07 PM
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Default Re: my car backfires alot when im drivin or downshifting from the muffler.. ? why? (4g_civic_si)

Backfiring- the sudden combustion of gases in the intake or exhaust system that results in a loud explosion.

I have that as well on my CRX. its kinda sweet to here it. but i have to change my exhaust, its broken the pipe from the tank of the exhaust.
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