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I would suspect and replace the spark plug, the spark plug wire, and the coil pack, BEFORE I consider the possibility of a defective CPS.

After all, you can't actually have a good spark, on the #1 cylinder, and get a misfire report at the same time.

When I had a defective spark plug, you could take a test plug and it fired fine with the plug wire from the mis-firing cylinder. Later, I found the defective spark plug had a crack in the insulator, and it fired fine if you pull it, and held it away from chassis ground to see if it was sparking.

The usualy signs of a defective CPS or syncronizer are: bad or rough idle, and/or poor transmission shifting and/or poor engine performance.
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