My Stang is backfiring!

WombRaider · October 29th, 2007, 06:45 PM

Ok, I have a little issue I would like to brainpick some people about. My car is firing horribly! It was at cold starts, and after I left the car sitting, at idle for a while. I would hit the gas, and the car would fall on it's face, and backfire a little. I just replaced the intake gasket, I got plugs(not installed, my car sits during the week!) replaced the cap, and rotor, and I also checked, and adjusted the timing with the spout connector out (10.5-11.5 degrees BTDC) I also left the spout connector out, so that the computer will relearn the proper timing, and not readjust back to 0-5 degrees ATDC.

It got worse after I did a fuel injection cleaning to it. Now it completely falls on it's face when I hit the gas, and sputters throughout the performance curve. I am think a fuel filter.

What else could it be?

terribleonexx88 · October 29th, 2007, 06:59 PM

did you check your firing order

WombRaider · October 29th, 2007, 07:07 PM

I am assuming the order is correct, considering this was almost not an issue a few weeks ago. It also idles just fine, when I hit the gas, it starts sputtering, and more so since I added injector cleaner to the mix> What is the odds this could be a fuel filter?

WombRaider · October 29th, 2007, 07:25 PM

I have a question about the firing order diagram, I am wondering which angle, and where the front of the cap is. sorry for asking that, but I am wanting to know, lol! I am learning to turn wrenches, I am pretty crafty, and do most of my own work, but there are some things I do not know, and I am surely not afraid to ask!

SALIV8 · October 29th, 2007, 07:26 PM

coud be filter are you gettin any codes?

SALIV8 · October 29th, 2007, 07:27 PM

Originally Posted by WombRaider

I have a question about the firing order diagram, I am wondering which angle, and where the front of the cap is. sorry for asking that, but I am wanting to know, lol! I am learning to turn wrenches, I am pretty crafty, and do most of my own work, but there are some things I do not know, and I am surely not afraid to ask!

usually the bottom of diagram is front

Speedstang302 · October 29th, 2007, 08:49 PM

did you put the injector cleaner in an empty tank then fill it..or did you just dump that in..cuz you could be buring bad gas cuz mixed w/ inj cleaner

FoxHoss · October 29th, 2007, 10:20 PM

deff sounds like you should change that fuel filter... also with fuel injector cleaners if there was any "loose" debri in the tank it prolly wouldve disovled it enough to let go and therefore clog up that filter a lil more... other wise have you done anything to your car lately, in the time that it was running good to now>?

CharlieMerc · October 30th, 2007, 07:44 PM

Mine seemed to have no power throughout the powerband. I replaced the mass air flow sensor and it picked up immediately. Try this. There was a service bulliten on a lot of Ford V8 cars in the mid- 90's. The MAF sensor is like $44.

vfast · October 30th, 2007, 07:52 PM

if you have a k/n filter it can get oil residue on the maf. what is your fuel pressure? chech this...

89LX347 · October 30th, 2007, 09:15 PM

o2 sensors?

October 29th, 2007, 06:45 PM	#1
WombRaider Newbie Join Date: Oct 2007 Posts: 5 iTrader: 0 reviews	My Stang is backfiring! Ok, I have a little issue I would like to brainpick some people about. My car is firing horribly! It was at cold starts, and after I left the car sitting, at idle for a while. I would hit the gas, and the car would fall on it's face, and backfire a little. I just replaced the intake gasket, I got plugs(not installed, my car sits during the week!) replaced the cap, and rotor, and I also checked, and adjusted the timing with the spout connector out (10.5-11.5 degrees BTDC) I also left the spout connector out, so that the computer will relearn the proper timing, and not readjust back to 0-5 degrees ATDC. It got worse after I did a fuel injection cleaning to it. Now it completely falls on it's face when I hit the gas, and sputters throughout the performance curve. I am think a fuel filter. What else could it be?

October 29th, 2007, 06:59 PM	#2
terribleonexx88 Enthusiast Join Date: Oct 2006 Location: new england Posts: 822 iTrader: 0 reviews	did you check your firing order __________________ 85 svo. work in progress

October 29th, 2007, 08:49 PM	#7
Speedstang302 I Post Entirely Way Too Much 1996 Mustang GT 13.64@101mph Join Date: Apr 2007 Location: Massachusetss Posts: 5,828 iTrader: 1 reviews	did you put the injector cleaner in an empty tank then fill it..or did you just dump that in..cuz you could be buring bad gas cuz mixed w/ inj cleaner __________________ 1990 GT- GT40p Heads\| Anderson N41 cam\| Crane 1.6 RR's\| Trickflow Intake\|MGW Short Throw\| Aluminum d/s\| 3.73's.....still slow....

October 29th, 2007, 10:20 PM	#8
FoxHoss Enthusiast 02' GT Join Date: Oct 2007 Location: Brooklyn, CT Posts: 907 iTrader: 0 reviews	deff sounds like you should change that fuel filter... also with fuel injector cleaners if there was any "loose" debri in the tank it prolly wouldve disovled it enough to let go and therefore clog up that filter a lil more... other wise have you done anything to your car lately, in the time that it was running good to now>? __________________ Nitrous is like a hot girl with an STD... you wanna hit it, but your afraid of the consequences 02' GT ~ Twin Screwed 469hp/493tq

October 30th, 2007, 07:52 PM	#10
vfast Banned Join Date: Aug 2005 Location: shimmy shack takeout Posts: 1,084 iTrader: 0 reviews	if you have a k/n filter it can get oil residue on the maf. what is your fuel pressure? chech this... __________________ EVERYONE IS ENTITLED TO MY OPINION:cool: 6'ers are for kids 1965 chevelle SS 421 sbc 6 speed, 3.90 gears,alum d-shaft, brodix heads,roller cam,925 AED carb...grocery getter[COLOR="Red"]RIP[/COLOR]

October 29th, 2007, 07:07 PM	#3
WombRaider Newbie Join Date: Oct 2007 Posts: 5 iTrader: 0 reviews	I am assuming the order is correct, considering this was almost not an issue a few weeks ago. It also idles just fine, when I hit the gas, it starts sputtering, and more so since I added injector cleaner to the mix> What is the odds this could be a fuel filter?

October 29th, 2007, 07:25 PM	#4
WombRaider Newbie Join Date: Oct 2007 Posts: 5 iTrader: 0 reviews	I have a question about the firing order diagram, I am wondering which angle, and where the front of the cap is. sorry for asking that, but I am wanting to know, lol! I am learning to turn wrenches, I am pretty crafty, and do most of my own work, but there are some things I do not know, and I am surely not afraid to ask!

October 29th, 2007, 07:26 PM	#5
SALIV8 all motor 92 coupe 9.94@136.40 Join Date: Dec 2006 Location: Chicago Posts: 576 iTrader: 0 reviews	coud be filter are you gettin any codes?

October 30th, 2007, 07:44 PM	#9
CharlieMerc Newbie 2002 Mustang GT Join Date: Oct 2007 Location: Dennis, Cape Cod, MA Posts: 26 iTrader: 0 reviews	Mine seemed to have no power throughout the powerband. I replaced the mass air flow sensor and it picked up immediately. Try this. There was a service bulliten on a lot of Ford V8 cars in the mid- 90's. The MAF sensor is like $44.

October 30th, 2007, 09:15 PM	#11
89LX347 Hardcore Enthusiast Join Date: Apr 2007 Posts: 1,304 iTrader: 0 reviews	o2 sensors? __________________ I believe in art when it is not seen. I believe in music when it is not audible. I believe in God when He is silent.

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