Ok guys. So i picked up this 1990 240sx last year that was all in pieces and im now done getting it back together and trying to get it through NJ inspection. I am failing for emissions.
IDLE-FAIL
HC ppm reading 387, standard is 220
CO% reading 3.32, standard is 1.20
HIGH IDLE-FAIL
HC ppm reading 266, standard is 220
CO% reading 0.71, standard is 1.20
It's a 1990 with a 1993 ka24de swap. A few things that im thinking could be the problem. It has aftermarket intake piping, and exhaust header. The EGR valve is not hooked up. The idle is high at about 1000-1100 rpm. Yes it has a cat on it.
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