2003 hyundai accent crank but no start, nospark ,nofuel pump op.

Was it running before you worked on it? If so, double check your work.
Make sure battery has a full charge and battery connections all good. Did you check good voltage and ground for fuel pump motor at the wiring connector?
If it cranks good but won't start, have a helper crank it, while you check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure, I don't care if the pump is new, check fuel pressure, anyway. Also, check fuel injector pulse. Only crank the starter motor a few seconds at a time, let it cool off.
Are there any applicable trouble codes? How long since over-all tune-up?

HI If all fuses are fine,EML warning light in cluster not on, The problem aria in these models were IGNITOIN COIL PACK ,CRANK SENSOR and make sure that ENGINE TIMMING BELT has not broken. BE advised that a diagnostic check will be required .

try the cam sensor too

Have you checked the timing belt, it is most likely has stripped out teeth and not turning the camshaft(s). Pull the belt cover off the front of the engine and see if the camshaft pulleys rotate when cranking the engine over.

A mechanic would use a fuel pressure gauge, you could spray starting fluid or carb cleaner into the throttle body to see if it will start on that.
Also check for spark at the plugs.

Sensors may not help you. Define "wont start". cranks? wont crank? cranks but wont run? Check engine light on with key on?

Have the fuel pump checked out

Remove the spark plugs and see if it turns over any faster, if it doesnt, you may have a spun bearing(bad news).

I think that your battery is dead. Try jump starting the car. Be careful that you hook the jumper cables correctly, red to positive[the + on the battery] black to negative[the- on the battery].

you may have a bad crank shaft sensor... they cost about $110.00 and are a pain to put in.