my 93 honda civic sounds like it wants to start when you turn the key, but it wont start up, we changed the coil, distributor cap, spark plugs and wires, and still wont work what could it be?  

that happen to me bro i knw whats wrong
its your destebutor you need a new one that happen to my eF hatch, i bought new spark wires and a new destebutor cap but nothing, but i was missing around with the wires and found out its my destebutor, i bought a new one with warrity it cost about 220$ i dont knw how much it gonna cost for your car ... just hit me up when if its not but i knw its the destebutor yo!  

Could also be the starter.  

You said it sounds like it wants to start, so it turns and cranks, but wont start right, if you already did the wires and coil, I would agree and say its probably your distributor. Now if it doesn't turn over at all, or crank when you turn the key than the starter is a possibility. I its is the starter, then a grinding is commonly present when turning the ignition as well. Let me know how it goes.  

try the fuel injection (main fi relay). During the summer months the increased heat will over heat and destroy an old relay. I had it go out twice for me with the same symptoms each time. It is located next to the fuse panel under the dash. Hope it helps  

Save some money -  Most likely the main relay.  monted under the dash / drivers side - remove it - resolder the contacts- reinstall - saved 50 - 150 bucks in my 93 CX. Also repaired 4 other hondas the same week / same problem.

Symptoms - sometimes it starts fine. Sometimes it turns over but won't start. Sometimes wait a few minutes or slam the door from being stranded often fixes the problem temporarily. (Swear if you must- but it won't be loud enough to shack the relay !-)

Finally - always replace the cheap parts first.