cviccoupe

the car had a knocking problem.it has been sittin for 1 year so i put a half talk of 93octane and some ocane booster let the car run.drove around the block and parked it...started it pulled the spark plug wire #2 and it started to hesitate then died....try to start it nothing....so i drained all the gas thinking the gas just was garbage now so i cleaned out the fuel filter and it was filled with nasty stuff.cleaned everything out in the fuel system now it gets good persure in the filter that it didnt get alot before.......now the spark is weak.....should i try the coil...would it have anything to do with my ecu even though its get fuel and spark...i need help and im on a buget let me know what u think