you got fuel pressure? and these people are steering you in the right direction with the main relay its under the dash on the drivers side under the steering wheel to the left of the interior fuse panel . alot of people have this problem and lose alot of money by throwing parts at it . go threw and eliminate what its not . you need air fuel spark and timing . if you have no fuel presure you pump isnt coming on . check for power goin to the fuel pump you can easily do that with a test light .