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Why are 2 cylinders not firing at 2 of coils on Kia 3.5?

Updated: 8/18/2019
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12y ago

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May have failed coil pack, there are 3 coil packs and 3 leads, 1 coil pack fire 2 cylinders in wasted spark.

Isolate the failing cylinder and test the input voltage and signal to coil using a led test light or noid light.

If signal is present- replace the coil pack

If no signal possible crank/cam sensor issue or ecu

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12y ago
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Q: Why are 2 cylinders not firing at 2 of coils on Kia 3.5?
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