Simultaneous misfire on a pair of cylinders? N/A 2.5L

then I haven't

This is just a wild-assed guess...

The way the coil pack works is that one coil is shared by 2 plugs. The current has to travel through both plugs and plug wires every time one plug fires. Seems to me that an intermittent plug or wire problem might cause a simultaneous misfire, assuming that the two missfiring cylinders are on the same coil.

Thanks! I wondered what was shared between 1&2, and 3&4. That sounds very likely. If it returns, off to the dealer, else I'll ignore it.

Note that my description above is not totally accurate.

Even though one coil is shared by 2 plugs, they don't "light the fire" at exactly the same time. At the instant that one plug fires on the compression stroke (and lights the fire), the other fires into the exhaust stroke. An intermittent wire or plug still might cause your problem though.

Let us know what you find out.