Misfire After Edit!

[EnricoPalazzo]

Hey guys,

I have had my car edited, it ran beautifully for a morning before it started making random misfires. So I edited my car back to factory map, the misfire is still there.

So on everyones advice I regapped the plugs to .85mm, the random misfire was still evident on factory tune.

I went out today and bought NGK bcpr6es plugs, regapped to .85mm and now the misfire is all through the revrange, as soon as boost hits, its is splutterin and there is no power at all.

Can anyone pls help with some suggestions of possible causes? I think I may have damaged one of the coils when removing them as I had to pry to plastic boot out of cylinder 4 and 5.

No matter what tune I run, the problem is still there. I have a full tank of fuel with some octane booster in it so its definately not detenation.

Can anyone pls help. Thanks in advance.

Dean

[FLASHXR]

  EnricoPalazzo said:

Hey guys,

I have had my car edited, it ran beautifully for a morning before it started making random misfires. So I edited my car back to factory map, the misfire is still there.

So on everyones advice I regapped the plugs to .85mm, the random misfire was still evident on factory tune.

I went out today and bought NGK bcpr6es plugs, regapped to .85mm and now the misfire is all through the revrange, as soon as boost hits, its is splutterin and there is no power at all.

Can anyone pls help with some suggestions of possible causes? I think I may have damaged one of the coils when removing them as I had to pry to plastic boot out of cylinder 4 and 5.

No matter what tune I run, the problem is still there. I have a full tank of fuel with some octane booster in it so its definately not detenatio

Can anyone pls help. Thanks in advance.

Dean

It definately sounds like a coil Dean. The only other thing I could possible think of, is maybe the fuel pump isnt providing enough fuel pressure, but that'd be a long shot. My money is on a spark issue. Cheers Trev

[HYPO 6]

who tuned it?

has it been custem tuned

[jetute]

  HYPO 6 said:

who tuned it?

has it been custem tuned

has nothing to do with the tune if its doing it on the stock factory map... im guessing the coil

[EnricoPalazzo]

tuned by wog 3 custom tunes, all have the same effect aswell as factory

Edited 25/10/05 11:19 AM by EnricoPalazzo

[leonb]

dean most likley the coil packs, have u spoken to the wog about it yet?

[Guest]

  leonb said:

dean most likley the coil packs, have u spoken to the wog about it yet?

<{POST_SNAPBACK}>

no but I just called him sounds to me a plug issue as when plugs were changed the issue became constant as before it was only under load!!!

[Guest cheffy]

did you ensure that the coil pack was making complete contact with the plug.??

[turbotom]

  EnricoPalazzo said:

Hey guys,

I have had my car edited, it ran beautifully for a morning before it started making random misfires. So I edited my car back to factory map, the misfire is still there.

So on everyones advice I regapped the plugs to .85mm, the random misfire was still evident on factory tune.

I went out today and bought NGK bcpr6es plugs, regapped to .85mm and now the misfire is all through the revrange, as soon as boost hits, its is splutterin and there is no power at all.

Can anyone pls help with some suggestions of possible causes? I think I may have damaged one of the coils when removing them as I had to pry to plastic boot out of cylinder 4 and 5.

No matter what tune I run, the problem is still there. I have a full tank of fuel with some octane booster in it so its definately not detenation.

Can anyone pls help. Thanks in advance.

Dean

Didn't you stuff up your coils when you tried removing your rear plugs?

I assume this is your quote......

  EnricoPalazzo said:

Hi, I have just been edited and finding now that I am getting a misfire common with our cars with standard plug gaps.

So I went to regap the plugs today to find that the plugs in my car have G on them, indicated they are for Gas plugs not petrol.

So my first question is, is this normal? Or should I buy new plugs. If so which ones? Copper or Iridium?

Secondly, when removing the coil packs, I found it really really hard to remove the 3 rear coil packs. The front 3 were fine, but the last 3 were so hard, that when I tried to remove them, the top of them came off with the spring, but left the bottom part in the engine. How do you remove the coil packs so this does not happen. I could not get them out, so I regapped the front 3 plugs, and put everythin back together, and will try again when I get new plugs ordered.

Thanks in advance.

[civillian]

Hi

I have a similar story, except I had a unichip.

Everything was fine for about a week or two

until it started missing... my tuner replaced the plugs with iridiums, and the problem was twice as bad.... instantly

It felt like the problem was in 2 or 3 cylinders, and it would work OK some days but not others.

They recommended taking it back to Ford warranty and getting the computer reflashed for overboost (this was a year ago when that was the common diagnostic)

Anyway cut a long story short, I had the unichip removed. Problem still existed, but less evident, perhaps understandably. Took it back to Ford.

It ended up being the iridium plugs! One or two of them had cracks in the insulation of the plug... and burn marks where the spark was escaping.

So, how did the new iridiums fail so quickly?? Many T owners have this missfire problem and they all get the factory ecu redone at ford, and the problem still exists. I rekon (im no mech) that the factory coils on a lot of these fords are a bit shakey when the system asks for a bit of spark. Not sure, what do you rekon??

I dont think this is the fault of the edit or unichip or whatever

Conversly, its possible the plugs were cracked before or during the installation

My ecu was not detecting the miss. If that's the case, I would be checking the plugs with a magnifying glass. I had this problem for about 10 months before finding it was the plugs.... argh!