Hi I have a Honda Civic Ex and it is very hard to start everytime i would have to press all the way down on the gas pedal to start it up i changed the idle air control vavle and the throttle body and all the stuff under the roller and cap and the fire is not sparking blue it's sparking yellow which is not right. It can brearly whole its idle i would have to hold the gas pedal to keep it running but once it get hot its easy to start but idle kinda low

 

sounds like a weak coil. WHY did you replace ALL that stuff could have saved a bit of money. stress test the ign system with a HEI tester. but at the same time how new is your plugs,cap.rotor and plug wires