Emissions

[nllnellie]

I have a 94 civic dx with a JDM sohc non-vtec zc motor in it. The motor has about 60k miles on it, and everything works fine. I took it to get emissions done, and FAILED!
25/25 test 50/50 test

Reading Allowed Result
HC ppm 19 147 pass
CO % 0.00 0.82 pass
NOx ppm 3174 1072 fail 4306 1186
RPM 2779 3000 max
CO+CO2% 14.54 6.00 min(pass)


On both tests, the NOx was 3x the legal amount. They said change the O2 sensor( it only has one: on top), EGR valve( doesn't have one), or the timing is off( it's perfect).

What can I do to get the NOx down? Is there anything that I can do? PLEASE HELP!!!!!

[suprapower]

your 02 sensor is bad. go to like autozone or oriellys and get a new one man and then youll be fine.

[Drifter147]

change the 02 sensor .but just my .02 g/l on getting it pass :)

[nllnellie]

your 02 sensor is bad. go to like autozone or oriellys and get a new one man and then youll be fine.


TY! :) i'm keeping my fingers crossed. btw.... i'm not a man

[slostang]

jdm motors were never made to pass any sort of smog emissions so getting it to pass might be a challenge.

[masanomi3]

I know but 3x is alot...just an o2 shouldn't do that????? I hope it will pass!!!!

[slostang]

do you have a hollow cat?

[masanomi3]

not that I know of....I hope not...only time will tell...

[slostang]

yeah your problems are more than just an o2 sensor. I had a burnt o2 sensor and a hollow cat and didn't come close to failing as bad as you did. I'm stumped.

[masanomi3]

IDK....we will see tommorrow....

[nllnellie]

IDK....we will see tommorrow....

that's MY car!!!! not your car!!!!!!!!!!!!!! :2up:

[masanomi3]

HAHA....I'm helping u.....

[nllnellie]

HAHA....I'm helping u.....


:2up::2up::2up::2up: