i need help ive got a 1998 cavalier 2.2 , it will not start it cranks and has fuel pressure BUT it will not fire , ive got power at module , the module is new the crank sensor is new the cam sensor is new plugs wires all new but still has no spark at plugs , ive swapped out coil packs still same thing no start , the fuel pumps cycles when key is turned on still nothing , this car was not running when i got it i was told it needed a head gasket i replaced it but it looked to be ok , anyway i doubt it matters but i have not installed serpentine belt yet , but wanted to mention in case there is something with it causing my problem anyway any help would be great , im just stumped right now Thanks