Verb fire up has 2 senses
  1. inflame, stir up, wake, ignite, heat, fire up - arouse or excite feelings and passions; "The ostentatious way of living of the rich ignites the hatred of the poor"; "The refugees' fate stirred up compassion around the world"; "Wake old feelings of hatred"
    --1 is one way to arouse, elicit, enkindle, kindle, evoke, fire, raise, provoke
    Sample sentences:
    Somebody ----s something
    Something ----s something
  2. light up, fire up, light - begin to smoke; "After the meal, some of the diners lit up"
    --2 is one way to ignite, light
    Sample sentence:
    Somebody ----s