Obd code,P0302,P0302 PD

I just changed out the plugs and wires,ran great for about 7miles,then it started running rough and vibrations! I checked the codes again and came up with cylinder #2 misfire! What's next? 98 Tacoma 4x4 4 cylinder

 

Hey Moose......I had the spark plugs changed on my '03 PreRunner (3.4) at the Dealership and a couple of days later had the same symptoms. I thought the transmission was going out from the vibrations and bucking like a mule.
Took it back to the Dealership and turned out that the individual who changed the plugs torqued one down to much and the spark plug had cracked.

 

Thanks for the input,I will check out the spark plugs!