emissions problems - have the diagnostic report - what do i do?

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Old Nov 5, 2002 | 06:47 AM
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serious's Avatar
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Default emissions problems - have the diagnostic report - what do i do?

here is my emissions test diagnostic report:



this is on a stock '90 civic dx hatch. what i noticed is that later in the test, and when my speed was up, the levels dropped to below acceptable. so....what do i do to pass?

if i moved things up and swapped in the d16z6 before i need to retest on the 27th, would that do it?
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Old Nov 5, 2002 | 07:00 AM
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Default Re: emissions problems - have the diagnostic report - what do i do? (serious)

i just echecked mines 3 days ago.. i am runnign rich and i tought i was going to fail.. anyways...
my was 1.47 limit 1.97
CO was 0.58 limit 1.27
i got the Z6 longblock... and passed with no problems.. and they are strict about that here....
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Old Nov 5, 2002 | 08:07 AM
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Default Re: emissions problems - have the diagnostic report - what do i do? (serious)


this is on a stock '90 civic dx hatch. what i noticed is that later in the test, and when my speed was up, the levels dropped to below acceptable. so....what do i do to pass?
Did you drive it to get the cat good and hot? I usually recomend driving them for ten miles and then holding the rpms at about 2500 while waiting in line.
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Old Nov 5, 2002 | 09:09 AM
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Default Re: emissions problems - have the diagnostic report - what do i do? (Chiovnidca)

ha, i passed maryland inspection about a month ago. and i have a b16'ed crx, ill try to find it
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Old Nov 5, 2002 | 10:22 AM
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Default Re: emissions problems - have the diagnostic report - what do i do?

Try replacing your plugs, oxygen sensor, and maybe retarding your timing. Your car should pass emissions. If I could pass emissions with my old d16z6 turbo w/ a free flow cat, you should have no problem passing. Something emissions equipment on your car is out of whack because you aren't any where near the legal limit on most of those charts.
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Old Nov 5, 2002 | 10:34 AM
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Default Re: emissions problems - have the diagnostic report - what do i do? (JDM EF9)

i just echecked mines 3 days ago.. i am runnign rich and i tought i was going to fail.. anyways...
my was 1.47 limit 1.97
CO was 0.58 limit 1.27
i got the Z6 longblock... and passed with no problems.. and they are strict about that here....
They have echecks in Dayton? That sucks, you should move to Columbus.
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Old Nov 5, 2002 | 11:29 AM
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Default Re: emissions problems - have the diagnostic report - what do i do? (serious)

unplug 1 of your injectors. instant 1/4th of the emissions...


Blaze
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Old Nov 5, 2002 | 11:35 AM
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Default Re: emissions problems - have the diagnostic report - what do i do? (Blaze45)

i would, but my dx is throttle body injection, so if i unplug an injector, i lose 2 cylinders.
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Old Nov 5, 2002 | 11:38 AM
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Default Re: emissions problems - have the diagnostic report - what do i do? (Blaze45)

unplug 1 of your injectors. instant 1/4th of the emissions...

Your joking right?
The the o2 sensor would see all that extra oxygen, so the ECU would richen up the mixture and the CO would go up. It would probably reduce the NOX readings though.


[Modified by Chiovnidca, 3:39 PM 11/5/2002]
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Old Nov 5, 2002 | 02:04 PM
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Ham'ed Hatch
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Default Re: emissions problems - have the diagnostic report - what do i do? (Chiovnidca)

i'm sorry i don't know how to read what the information means that they give you, but how old is your cat? my DX failed twice, so i thought it'd be a good time to swap in the ZC. finished the swap and it still failed another 3 times. ended being i just needed a new cat. passed well under the allowances.
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