Ford Repair: 1988 f150 fuel problems, fuel problems, fuel pump

Question
my truck won't star unless I spray gas into the intake

Answer
If you are referring to starting fluid, Please do not continue using that for your own good.Check to see if your fuel pump is cutting on.It will cut on for about 5 seconds when you turn the ignition key on.If it does not start then you will want to make sure the fuel pump is getting power.