2000ls

Well my car(2000 integra ls) has still been not starting intermittently, about once a week or so. Doesnt seem to have anything to do with temperature. Does it when the motor is hot and cold, makes no differnce. Possibly could have something to do with the humidity in the air, i'm having a hard time finding things in common with the days it wont start. Its not battery related, the car cranks but doesnt fire up. Doesnt sputter, or sputter and die. Just wont fire up at all.

What i've tested:
I hear the fuel pump prime up for 3 seconds
Pulled a spark plug, its getting spark
Loosened up the fuel filter line and gas escaped, so i have fuel pressure coming up front it seems
Cranked the engine with the spark plug out, didnt smell any gas in the cylinder. All plugs are bone dry after cranking
The check engine light comes on for 2 seconds then goes off when key is in II posistion, so the ecu is working fine.

Runs perfect when it starts, doesnt use any oil and doesnt smoke or anything. Has the power that it should.

The car has new timing belt, distributor, coil, icm, plugs, wires, cap, rotor

So it seems like the injectors were not firing today when the car wouldn't start. I went back 3 hours later and it fired right up and ran perfect. It only does this once a week or so.

I pulled the main relay out, all the solder joints look fine, but it did have a slight "burnt" smell to it. I know that the main relay typically causes the fuel pump to not prime, but I'm pretty sure the main relay sends power to the injectors/ecu also.

Im kinda lost on what would cause me to not get fuel into the cylinders intermittently like this.

God-Driven

I think the cam sensor inside the dizzy control injector pulse, you might have a bad dizzy, have you check for any engine codes?