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2014 LT program car, Pull Me Over Red, 1.4T Auto
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13,455 Posts
Thanks everyone for your suggestions.

  • Yes the coils came with brand new boots
  • I'll give the wires another good inspection to see if I can find any wear points
  • plug gap - great idea, I did make sure they were gapped to .30
  • Camshaft sensors - will check.
Same answer I posted for you before:
Tips to ensure no misfires occur because of changing the coil pack:

Remove the coil pack. If the boots are stuck on, use a small screwdriver or pick with some dielectric grease on it to go around the outside of the boot and then possibly the inside of the boot to help aid in removal.

Remember to (p)re-gap your plugs to .028,



Set gap with the black portion of this tool.








Measure the gap with feeler gauges.




284857




Throw this away.




284858





Torque to 18 ft-lbs with no anti-seize on the threads of a stock type plug.

Ensure the boots have no rips/tears or holes in them,and make sure the resister springs are clean and not caught up in the boots when you install them. Lightly coat the boots and springs with dielectric/silicone grease.

I recommend the MSD coil pack

If the plugs look bad, consider these:

-BKR8EIX-2668 (iridium plugs), ~$25, expect ~10-15k regaps on these, ~40-50k overall life.
-BKR7E-4644 (nickel/copper plugs), ~$8, expect 15-25K out of these plugs, with a regap or two required at 5-8k intervals on stock tune.

Read Hesitation Gone! for more info on the plugs.
 

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Administrator
2014 LT program car, Pull Me Over Red, 1.4T Auto
Joined
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13,455 Posts
There was a TSB that pointed out failure of the connector that connects to the coil. I believe the terminals would spread and make poor contact. Unsure if that is the issue you are having, but it is documented on the OEM side.
Can you post a link to this TSB?
 
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