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Thread: Emissions

  1. 07-30-2008, 07:44 PM #1
    nllnellie
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    Default Emissions

    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!!!!!
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  2. 07-30-2008, 08:17 PM #2
    suprapower
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    your 02 sensor is bad. go to like autozone or oriellys and get a new one man and then youll be fine.
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  3. 07-30-2008, 08:18 PM #3
    Drifter147
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    change the 02 sensor .but just my .02 g/l on getting it pass
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  4. 07-31-2008, 12:17 AM #4
    nllnellie
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    Quote Originally Posted by suprapower
    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
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  5. 07-31-2008, 01:16 AM #5
    slostang
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    jdm motors were never made to pass any sort of smog emissions so getting it to pass might be a challenge.
    Quote Originally Posted by Echonova View Post
    And I do drive a Miata, so I am gayer than a three dollar bill...
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  6. 07-31-2008, 01:26 AM #6
    masanomi3
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    I know but 3x is alot...just an o2 shouldn't do that????? I hope it will pass!!!!
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  7. 07-31-2008, 01:52 AM #7
    slostang
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    do you have a hollow cat?
    Quote Originally Posted by Echonova View Post
    And I do drive a Miata, so I am gayer than a three dollar bill...
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  8. 07-31-2008, 02:27 AM #8
    masanomi3
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    not that I know of....I hope not...only time will tell...
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  9. 07-31-2008, 02:38 AM #9
    slostang
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    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.
    Quote Originally Posted by Echonova View Post
    And I do drive a Miata, so I am gayer than a three dollar bill...
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  10. 07-31-2008, 02:59 AM #10
    masanomi3
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    IDK....we will see tommorrow....
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  11. 07-31-2008, 08:44 AM #11
    nllnellie
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    Quote Originally Posted by masanomi3
    IDK....we will see tommorrow....
    that's MY car!!!! not your car!!!!!!!!!!!!!!
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  12. 07-31-2008, 08:57 AM #12
    masanomi3
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    HAHA....I'm helping u.....
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  13. 07-31-2008, 09:05 AM #13
    nllnellie
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    Quote Originally Posted by masanomi3
    HAHA....I'm helping u.....

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