What causes my car engine missing when car is idled? on 1999 Infiniti Q45

Just had tune up 1 week ago

Asked by for the 1999 Infiniti Q45
2 answers
It could be numerous items causing issue,least expensive route is to start with checking for vacuum leaks.
i would return to whrer you had your work done and have them re check it for you to verfiy there work.

was it missing before the tune up??