hey, i have a jdm d15b in a 92 ex sedan, the problem is that when i try to start it first thing in the morning it starts and sputters and dies, then it will start, sputter a bit and idle between 2500 and 3000 rpm. once its warm it goes down. the problem is though, when its sputtering there is smoke coming from under the hood and it smells really gassy. i dont know if civics even have a cold start setup but i was thinking it could be that or possibly a leaking injector. its only the first start of the day any ideas?