random engine misfire is what comes up, new plugs done, what could problem be no

What is your question?

car jerks slightly occassionaly. other times runs perfect. checkk engine light oly came on twice. both times same reading. it's done it once since the tune up

What makes this problem better or worse?

it started after several days of very cold weather in TX

How long has your 2014 Nissan Versa had this problem?

month