M markgil15 New member Sep 9, 2010 #1 i already change the spark plugs, change oil, air filter. the results have a high number in HC(PPM) and CO(%). i want to know what else should i change to make this car pass the smog.
i already change the spark plugs, change oil, air filter. the results have a high number in HC(PPM) and CO(%). i want to know what else should i change to make this car pass the smog.
