2004 Misfire help! - Mustang Evolution

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Old 07-03-2012, 10:40 AM   #1
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2004 Misfire help!

I had a wee bit of a misfire on my car when I got it so recently I upgraded my Coil pack to the screamin demon, got MSD wires and changed all my spark plugs with the NGK platinums, I was told it was a quick fix and nice little upgrade. Problem is yesterday on a drive home cylinders 3 and 4 misfired to the point of sputtering and hesitating. I had to put on my old coil pack to resolve it but it still has a slight misfire just not as bad. Can anyone give me some possibilities?
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Old 07-03-2012, 02:05 PM   #2
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Re: 2004 Misfire help!

the problem is the screamin demon pack...they are pure junk and 99% of the time will cause a misfire.

swapping helped but now you'll need to check the plugs and wires to make sure the SD pack didn't mess them up...luckily it's a 15 minute job to pull them
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Old 07-03-2012, 03:37 PM   #3
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Good.thing i didnt buy that...im waiting on a coil right now....my 03 lost power and engines shaking
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Old 07-03-2012, 07:24 PM   #4
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Quote:
Originally Posted by 1slosix
the problem is the screamin demon pack...they are pure junk and 99% of the time will cause a misfire.

swapping helped but now you'll need to check the plugs and wires to make sure the SD pack didn't mess them up...luckily it's a 15 minute job to pull them
+ 1 .. Should have went MSD coil pack as well ..many times when a misfire occurs it fouls out a plug .. Defiantly check plugs
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Old 07-03-2012, 07:37 PM   #5
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mine was duralast lol i got 2 year warranty n didnt need plugs
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Old 07-04-2012, 12:05 AM   #6
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Did you possibly put too much seize on the plugs if you did?
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Old 07-04-2012, 04:33 PM   #7
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Re: 2004 Misfire help!

ah i forgot to ask that lol...good point blackout

some people don't even remember to check plug gap since most brands claim that they are pregapped...i never believe this so i take the couple seconds required to gap each plug
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Old 07-04-2012, 05:03 PM   #8
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what does that mean? lol
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Old 07-04-2012, 06:29 PM   #9
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Re: 2004 Misfire help!

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what does that mean? lol
gapping the plugs? it means you're setting the little prong on the ends of the spark plugs to a certain distance (or gap) from the center point of the spark plug...different vehicles need different gaps to run right.
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Old 07-04-2012, 07:07 PM   #10
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hmm.never knew that
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Old 07-04-2012, 08:17 PM   #11
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Re: 2004 Misfire help!

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hmm.never knew that
yep...it's a good thing to learn you can get a $1 gap tool at the registers of any autoparts
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Old 07-05-2012, 04:36 AM   #12
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thanks bro...im berly learning/:
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Old 07-05-2012, 08:09 AM   #13
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Re: 2004 Misfire help!

I had an old vet of the drag game help me and he showed me gapping and stuff and they were all right he double checked my work and everything was fine so now i guessing it was just the coil pack...what are the best ones? specially ones with a little kick
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