car runnin rich

whatsup if anybody can help me out with my 90 rs, its been boggin on low rpms, anc once in a while when i rev it , a big puff of white smoke will come out . if anybody knows what might be causing this or is there a way i can fix it, please let me know thank you

first off, when was the last time u did a tunee up?

white smoke sounds like coolant…black smoke meeans ur running rich…