im having a problem with my 2002 blazer and it wont start i changed the fuel filter spark plugs wires distributor cap and rotor idk what else to do???

 

It's great you're telling us about all the new things you have. The good thing is you have taken care of routine maintenance items. I think you should now tell us what's going on with the vehicle. Do you have spark at the plugs? Do you know if the fuel pump is running?