1998 suburban starting issue
 

i got a 98 chevy suburban and for some reason the very first start of the day it doesnt want to start so when i spray brake cleaner down the air tube it fires up and it will fire up for the rest of the day its really wierd cause it doesnt run all day when im at work and im at work for 10 hours a day and i can get in it and it fires right up but in the mornings nothing here comes more spray