unless the dizzy is leaking oil or starts pinging like crazy at high rpms (indications of bearing failure, or ignitor toasted) then u just need to do a cap and rotor, cap and rotor and ignition wires are supposed to be replaced approximately every 12k miles, or once a year at least now noone does this. just check the condition of the terminals on the cap and the rotor. and once u finally get the car starting while its dark take a look at the spark plug wires if they need replaced u will see small archs of electricity where the wiring has started to fail. also check ur spark plugs for sure i replace mine at least every 12k miles and alot of the time earlier they are the best indicator of what is going on inside ur engine.