Backfiring??????????????

[88stangnut]

I wanna know why my car is backfiring, If I rev it to like 3 grand it pops like 2-3 times during deacceleration. I have no cats and flows and equal length headers, is this why??? Can somewon tell me the correct firing order for a 93 motor 5.0 ???, I tryed for the hell of it to unplugg my 02's when I shut it off and dis and reconnected the battery and started back up and it runs the same, could it be my o2's are bad??? thanx for any help

 

[tvmango]

Is it backfiring or just popping?? you said both...

 

[88stangnut]

well its loud, so i say backfirin, popin isetn no where as loud i guess

 

[banditmwp]

if it's like gunshot loud, you have a problem ...if it's a milder pop, that is normal due to the open design of the flowmasters,:worship: added to the fact you don't have cats to slow down the airflow

 

[D347643]

backfiring or after firing? a backfire is through the intake and an afterfire is through exhaust. Find out where its coming from.

 

[88stangnut]

After Firing!!, it sounds like a small gun shot, itsnot a shot gun but its louder than any pettet gun ive heard

 

[BlackFox5.0]

Mine does the same thing, I'm not too worried about it, it does it a lot more since my msd install...I know the 4.6's do this a lot too

 

[93steeda]

Not for sure but someone told me that if you have an exhaust leak it could suck in air on decelleration and cause it to make popping sounds.

 

[88stangnut]

huh maybe, I thought maybe from me disconncetin the o2's the car would run like ****, its acting like there not even maken a differece, I know when my crown vic o2's went the car ran like ****