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If the misfire was diagnosed with a scan tool it will be #3 cyl, but if using certain scopes would be #3 in firing order which is #2.
Run a cyl leakdown test on #2 and you will probably find a leak to exhaust on #3 cyl. due to a burned exhaust valve. These engines tend to burn the exhaust valve on either #3 or #6 cyl for some reason, possibly due to furtherest from incoming cooled coolant. I have found this on several of the 3.0 duratech engines and always #3 or #6.
I jope tyhis helps, if so please accept.
Glenn Irvin, Ford Dr.