1985 z24 engine any ideas this thing is really being weird

it sat for 3 years manual transmission. started it ran crappy then mellowed out. plugs looks good, brand new cap and rotor. did an oil change. now it won't start. it was doing fine after checking cap and rotor it woudnlt turn over so the rotor was cleaned it started up nicely. this morning it wouldn't start same type of thing so we completely replaced the cap and rotor. it turns over and the coils are hot but not pulsing and it won't start. any ideas? it has the 8 spark plug system with no points or condencer. carbaurated. any help you could give would be appreciated i'm about to go find some dynamite or something. TIA for the help