94 olds cutl sup. 3.4L,i have autozone code it , it said lean fuel?

when it warm, 70 and above it run perfect, this winter each morning and after work ,it starts up and reves up to 3k then dies, the only way to go is to power brake it till it warm, then it back to running smooth, no check engine light,beleive me this car has everything new, new & new ,after it sits for the weekend, its sometimes startes and runs perfect, then i starte it after work and the same old ****, it smells like lighter fluid when it's cold and running bad, this is very inbarruing for me be cause i'm a mechanic, please help me, please serious answers only,