1993 f150 crank no start

spark and start rhyme, actually!! how do you know you have spark? did you take the plug out and watch this ? There is very little information given in your symptom story. have your changed your plugs/ wires recently or even at all?? How long have you had your truck for. When I buy a vehicle I ALWAYS ( on a private party purchase) change my fluids/ filters, and my plugs/ wires. How do you know you are getting pressure to the rail? Did you take your Schrader cap off and test it? replace your plugs and see what''s up. Most likely a .044 gap on your plugs. that is where I am at with a 96 355. good luck