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06 Gt Misfiring On Cylinder 4

  • Thread starter Thread starter Midnight 06
  • Start date Start date Oct 14, 2017
  • Tags Tags
    06 gt help
M

Midnight 06

New Member
Mar 30, 2017
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Oct 14, 2017
#1
  • Oct 14, 2017
  • #1
I have a 06 gt and I replaced the plugs to motorcraft platinum. No problems until I got on it at it started to misfire on cylinder 4.
I hooked a noide light to the injector wires and cylinder 4 had a weaker pulse than the others.
And I checked the plugs just to make sure there was no cracks.

I don't know how to go about fixing this.
Car isn't stock and any input is helpful at this point.
 

Bullitt347

I have been doing it wrong this whole time
15 Year Member
Mar 23, 2007
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Middle of Maine
Oct 14, 2017
#2
  • Oct 14, 2017
  • #2
Possible ignition coil going bad. Swap the #4 coil with the #3 coil and see if the miss-fire goes to cyl #3, if it does, then you know it is the coil.
 
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