sputtering..

Chris951 · November 1st, 2009, 06:31 PM

The other day I changed my header gaskets and I changed 2 cracked spark plugs because I guess I over tightened them months ago when I put them in. I went to fill up for gas literally right after I finished and my car started sputtering with 1/4 throttle or less. The sputtering feels the same as when there is moisture in the dizzy cap. But I didn't even change anything. firing order is correct. Could the 2 new plugs along with the old ones make it run different? Or did I get bad gas? I'm also getting like 8mpg now too. I went through 3/4 of a tank in less than 2 days. After I filled up it ran a little better but it still sputters. Any help would be great. I'm gonna let the tank all the way to empty and see but i'm kinda stumped

baine21225 · November 1st, 2009, 06:33 PM

I have never changed only two plugs at once, and i dont know if that would make a difference or not, when is the last time you changed your fuel filter or plug wires?

Chris951 · November 1st, 2009, 06:35 PM

Originally Posted by baine21225

I have never changed only two plugs at once, and i dont know if that would make a difference or not, when is the last time you changed your fuel filter or plug wires?

plug wires are 2 months old and fuel filter is a little less than 3 months old. And I've never only done 2 plugs either..

baine21225 · November 1st, 2009, 06:37 PM

did you buy a cheap or quality fuel filter?

Chris951 · November 1st, 2009, 06:38 PM

Originally Posted by baine21225

did you buy a cheap or quality fuel filter?

Motorcraft. I dont think its that though. It literally just started right after I did the gaskets, plugs and gas

JBIGBOOTSY · November 1st, 2009, 06:39 PM

I'd idle the car at nite in the dark, and look for any arking

Chris951 · November 1st, 2009, 06:44 PM

I actually did that last night and saw nothing

seans mustang · November 1st, 2009, 08:32 PM

i would check the 2 plugs u put in maybe they are bad,might have been dropped in the store before you got them

89lx · November 1st, 2009, 09:16 PM

plug wires on all the way?

C MY 4D · November 1st, 2009, 09:20 PM

Check for codes yet? Does it seem like a dead miss, random miss? running rich? Know much about a DVOM?

Chris951 · November 1st, 2009, 10:12 PM

I changed all the plugs tonight and it runs perfect now, so it was because I put 2 new ones in with old ones. I'm never changing a couple plugs at once again lol. Thanks for the help guys

baine21225 · November 1st, 2009, 10:21 PM

awesome, lucky it was such a cheap fix

Chris951 · November 1st, 2009, 10:33 PM

Originally Posted by baine21225

awesome, lucky it was such a cheap fix

I know right! Before I started it up i was praying the plugs would fix it lol. Thank god its running good though. Haven't ever had it running this good

November 1st, 2009, 06:31 PM	#1
Chris951 Hardcore Enthusiast 1988 T-top 5.0 Join Date: Aug 2007 Location: Mesa, AZ Posts: 1,409	sputtering.. The other day I changed my header gaskets and I changed 2 cracked spark plugs because I guess I over tightened them months ago when I put them in. I went to fill up for gas literally right after I finished and my car started sputtering with 1/4 throttle or less. The sputtering feels the same as when there is moisture in the dizzy cap. But I didn't even change anything. firing order is correct. Could the 2 new plugs along with the old ones make it run different? Or did I get bad gas? I'm also getting like 8mpg now too. I went through 3/4 of a tank in less than 2 days. After I filled up it ran a little better but it still sputters. Any help would be great. I'm gonna let the tank all the way to empty and see but i'm kinda stumped __________________ 1988 LX T-top 5.0: 70mm BBK Throttle Body 4.10 gears BBK shorties, Pypes O/R X-pipe, Dumped Flowpaths Pro 5.0 shifter

November 1st, 2009, 06:33 PM	#2
baine21225 MM Fanatic Join Date: Jun 2007 Location: Baltimore, MD Posts: 3,966	I have never changed only two plugs at once, and i dont know if that would make a difference or not, when is the last time you changed your fuel filter or plug wires? __________________ "Whip out your dick you'll either get it sucked or get smacked..." "That's how Dad did it, that's how America does it... and it's worked out pretty well so far..."

November 1st, 2009, 06:37 PM	#4
baine21225 MM Fanatic Join Date: Jun 2007 Location: Baltimore, MD Posts: 3,966	did you buy a cheap or quality fuel filter? __________________ "Whip out your dick you'll either get it sucked or get smacked..." "That's how Dad did it, that's how America does it... and it's worked out pretty well so far..."

November 1st, 2009, 06:39 PM	#6
JBIGBOOTSY MM Fanatic 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 3,102	I'd idle the car at nite in the dark, and look for any arking __________________ I <3 Econobarns AFR graph.

November 1st, 2009, 06:44 PM	#7
Chris951 Hardcore Enthusiast 1988 T-top 5.0 Join Date: Aug 2007 Location: Mesa, AZ Posts: 1,409	I actually did that last night and saw nothing __________________ 1988 LX T-top 5.0: 70mm BBK Throttle Body 4.10 gears BBK shorties, Pypes O/R X-pipe, Dumped Flowpaths Pro 5.0 shifter

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November 1st, 2009, 08:32 PM	#8
seans mustang Regular 1994 mustang gt 13.00 sec Join Date: Oct 2009 Location: michigan Posts: 51	i would check the 2 plugs u put in maybe they are bad,might have been dropped in the store before you got them __________________ seans mustang

November 1st, 2009, 09:16 PM	#9
89lx Regular 1989 LX coupe 5.0L Join Date: Dec 2007 Location: NS Canada Posts: 320	plug wires on all the way? __________________

November 1st, 2009, 09:20 PM	#10
C MY 4D Black Mamba w/ a New Box. Yeah Baby. 2003 Cobra 11.14@124.36 Join Date: Aug 2006 Location: Hampton, VA Posts: 3,018	Check for codes yet? Does it seem like a dead miss, random miss? running rich? Know much about a DVOM? __________________ MM Cobra Club Hater Club Founder..... Need work done to your car for a great price in Hampton Roads? Shoot me a PM.

November 1st, 2009, 10:12 PM	#11
Chris951 Hardcore Enthusiast 1988 T-top 5.0 Join Date: Aug 2007 Location: Mesa, AZ Posts: 1,409	I changed all the plugs tonight and it runs perfect now, so it was because I put 2 new ones in with old ones. I'm never changing a couple plugs at once again lol. Thanks for the help guys __________________ 1988 LX T-top 5.0: 70mm BBK Throttle Body 4.10 gears BBK shorties, Pypes O/R X-pipe, Dumped Flowpaths Pro 5.0 shifter

November 1st, 2009, 10:21 PM	#12
baine21225 MM Fanatic Join Date: Jun 2007 Location: Baltimore, MD Posts: 3,966	awesome, lucky it was such a cheap fix __________________ "Whip out your dick you'll either get it sucked or get smacked..." "That's how Dad did it, that's how America does it... and it's worked out pretty well so far..."

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