1987 ford bronco wont start

I have a 1987 fullsize ford bronco with 160,000 miles, with a 302 and 4 wheel drive. It ran last summer and i parked it for the winter. and went out this spring and it wont start. i have tryed everything, new plugs, wires, distributer cap and rotor, ignistion module, coil, battery,fuel filter, air filter, and timing gears. It turnes over and tryes to fire but wont start. it gets spark and gas but wont run. i have ran out of ideas if you have any suggestions feal free to let me know.
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Its got spark, compression, and fuel. thats why i dont know whats wrong with it.