Stupid Fucking cali smog. I failed at idle for high HC. What Would cause slightly high HC Numbers? last week I ran garunteed to pass through the tank till just about empty then I filled up with 91. before testing I drove the car aound for about a hr to get it to temp. just did a oil change last week, ngk spark plugs and wires there about 2 yrs old. here is my test result help would be very much appreciated as this is my daily commuter car. I have got to get this fixed before I end up having to quit cus of no transportation. oh yea engine is a d15b7 in a 93 eg sedan.