My 88 5.0 wont start. I have replace spark plugs, wires, distributer cap, roter, computer, fuel tank, fuel filter, fuel pump, eec relay, Fuel regulator, the car was running then sat for two months out of gas with melted fuel lines so i replaced the fuel line and accidently hooked them up wrong then i got the the right way and it wont start. it cranks and cranks but wont start the spark plugs are firing there is fuel to the rail at good pressure. But it wont start. the engine turns but wont run i have changed and checked everything that i can think of except the ignition itself. any ideas