That would have the same effect too, no doubt.

clonetek

The easiest thing to do is like Tim said, start it up, and unplug each coil and see if one or more show no change when you unplug that coil (AKA the bad plug)

 

hmm.. i don't have a rough idle though.. i'll unplug the coilpacks one by one though..

 

I vote a Cat or Muffler, but I'm no expert.

 

well, i unplugged each coilpack one at a time with the truck running.. each time it made the truck run rough & stumble...

pics of a plug that i pulled.. (same plug in each pic)

http://svt.kicks-***.net/images/spark/

gonna go pull some more plugs now..

 

well, the front 2 plugs on each side look fine..

i also checked my MAF & boot, took chip out, cleaned contacts, and reset computer.. gonna go test drive real quick.

hopefully i'll be able to get to the back 4 plugs tomorrow morning.
(i work graveyard shift.. its time for bed!)

 

i drove it & it still did the same thing.. but i got to thinking..

at world ford challenge 4, speedin bob adjusted my boost actuator for me.. i had the 2lb pulley then.. would the 4lb pulley screw that up?

i was thinking some more & decided to stop at ricer central (aka: autozone lol) and get some fuel injector cleaner..

put it in and the problem has started to go away.. i'll test it out some more tonight on the way to work.

 

maybe it is your brass rotor cap... could it need polishing?

 

haha... anyone ever figure out what that was?

 

@%#@ must have been a placebo effect.. aargh!

 

Hey Brooks

By any chance have you gone to the track and got any race fuel lately. If so you may have gotten some leaded fuel my mistake. If so you may have clogged the cats.

I don't know just a guess from a long ways away

 

no race gas..

i really don't wanna have to pull those back 4 plugs.. hmm

hey don.. how hard was it to pull the blower/intercooler off?

i may just take everything off & clean it... then change those damn plugs.

 

It isn't to hard to take everything off just takes some time.

The blower is held on by 8 13 mm bolts, and you have to unscrew the pcv tube along with some vacuum lines. The intercooler you have to remove the coolant lines and about 5 bolts at the back od the intercooler. The 8 bolts that hold the supercharger act as the front and side bolts for the intercooler.

 

dammit Brooks

go buy a 7mm swivel head socket at Sears and a 5.00 magnet and pull the plugs

 

fuel filter? I don't really know what they do if they are dirty but I think it would act like a misfire or something maybe? I don't know..just a guess.
Keegan

 

Here is what you need to change the plugs with.
Shawn changed my plugs at FFW Ennis in less than 30 minutes.


The short extention w/ socket from the second to the right is not needed. It was found on my wiper cowl while that was done. I gave that to Shawn courtesy of Bankston Ford.
I believe Shawn only took off a couple things when he did the plug change. The boot and MAF and one of the hoses that was connected to the bottom side of the boot was removed for the driver side plugs to be reached easier. I believe that was the only things that he took off. I think he moved something else to the side, I would just have to go look under the hood again to see what it was exactly.
To remove the coil packs, Shawn used an 1/4" drive extention 18" long with a 7mm whobble socket and ratchet. He used the magnet on the right to put the bolts back in the coil packs when he was installing them back in.
He used a 3/8" drive extention about 24" long, a very deep 5/8" socket connected to a whobble joint, and a ratchet to get the plugs out. Shawn made it look so easy it was fricking unbelievable.


Also, did this start happening after you put gas in it. You may have just put bad gas in it if the injector cleaner helped some.