My 6 y o daughter has earache for 24 hours, no temperature but has clear liquid leaking from her ear is it an infection?

Yes.Call your MD: One can have an ear infection without fever. It sounds like your daughter's eardrum ruptured which would explain the clear drainage. While that sounds awful, it really isn't. Nearly always the ear drum will heal by itself once the infection is cleared. In fact, before the days of antibiotics, ear infections were often treated by poking a hole in the ear drum to permit that fluid to drain out.