You have to first determine whether it is a missing spark or missing fuel.

Do you hear the fuel pump buzz when the ignition switch is turned on, before the start ? The sound should be near the right rear side.

You can buy a spark tester from auto parts store that will let you check for a spark without opening the spark plug. Check for spark when you are cranking. If you dont get a spark on all the sparkplug cables, it could be the coil or the crank position sensor or the ignition control unit.

Also at the auto parts store is a chemical called quick start fluid. Spray this chemical in the air sensor housing, i,e in the unit that has the air sensor plate, and then crank. If the car starts, then the problem is that you have too little fuel going in during startup. Then the problem could be related to the EHA valve, cold start valve (though this is a questionable issue), coolant temp sensor, fuel pump, etc etc

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Saumil S. Patel