Quote:
Originally Posted by joeapple8
I just failed my smog 3 mins ago, im on my laptop using his Wi-Fi, he seems pretty mad cause its pass or dont pay, =\ but yeah heres the results, the HC for 15mph was measured at 132 and maximum allowed was 118, my NOx at 15 was measured at 1556 and maximum allowed is 799. I had no problem for HC at the 25mph test but the NOx was still high measured at 806, and max allowed is 738, the guy said I should check my CAT...
what do you guys think..
its a stock KA24DE with straight pipe...
let me know if u need my other numbers
|
if "straight pipe" means no catalytic convertor
you should probably get one. if it means a muffler tip, read on.
easy stuff first. timing, check for vacuum leaks, fouled plugs, wires, obvious shit.
high HC and NOx sometimes mean a misfire. check how much o2 is coming out at the 15mph. if it is high, there is unburned oxygen coming out. check for a misfire. if O2 is low, check the EGR valve, it may be malfunctioning.