Emmisions Fail....Help!

[Marko13]

1993 Accord with a JDM F22B. I did a full tune up. Plugs, wires, cap etc. I replaced the O2 sensor and cat convertor last year and have no CEL whatsoever. Any help would be appreciated. Im in GA btw...Heres the only thing thats failing.

50/15 Test

HC ppm Reading 00196 Allowed 00132

CO% Reading 8.83 Allowed 0.73

[dysfunk]

Have you cleaned out the egr?

Try reading through this thread.

http://cb7tuner.com/vbb/showthread.php?t=186753

[accordztech]

Have you cleaned out the egr?

Try reading through this thread.

http://cb7tuner.com/vbb/showthread.php?t=186753

He didn't post any nox numbers so why would he clean the egr


We need all the numbers and the co2 % number.

[wed3k]

jesus that CO can kill someone. if you can recheck o2 status and then move onto a fpr or map sensor.

hc will drop when you fix co.

[Marko13]

jesus that CO can kill someone. if you can recheck o2 status and then move onto a fpr or map sensor.

hc will drop when you fix co.

So check the o2 sensor to be sure its not bad? I have no CEL. Wouldnt i have one if the o2 sensor is faulty?

[agol]

go buy one of those bottles at one of your local auto parts stores. its like called emission pass test or something like that. its guaranteed or your money back might as well give it a shot if you dont think anything is wrong.

[accordztech]

Post all your numbers and info from smog. Because it can be a number of things or something simple.

[90blackcoupe]

go buy one of those bottles at one of your local auto parts stores. its like called emission pass test or something like that. its guaranteed or your money back might as well give it a shot if you dont think anything is wrong.

"Guaranteed to Pass" - You should read the fine print on the back of thoes bottles. It clearly states; warranty only valid if all emission components are fully functioning. If all emisssion components are fully functional why would you need that? Beside there is no magic fix in a bottle.

[cloudasc]

"Guaranteed to Pass" - You should read the fine print on the back of thoes bottles. It clearly states; warranty only valid if all emission components are fully functioning. If all emisssion components are fully functional why would you need that? Beside there is no magic fix in a bottle.

Best one that I've heard is to add is rubbing alchohol to the gas tank.

[Marko13]

[accordztech]

Seems like its misfiring. Judging by the high Co numbers andthenox.

[90blackcoupe]

Seems like its misfiring. Judging by the high Co numbers andthenox.

The nox was fine, he tested high on hc and co on the 50/15. It could be a missfire but he did fine on the 25/25 so I'd rule that out.

I'm not to experienced with a 50/15 test since in ontario we only run the 25/25, but your alloweble limits in georgia are pretty high compared to ontario on the 25/25.

Juding by your high hc and co on the 50/15 test 50% weight at 15mph seems like you oxygen sensor is fubar, remember gas cool the cylinder bores thus your lower noX number, and high hc/co, your running rich. 50% weight is about 870ish kg at 15mph is a lot of load, the engine has to work hard.

Someone more experience on a 50/15 test can provide better knowledge, I only do 25/25, and looking at your 25/25 everything seems normal other then the nox is around 458 which seems high(a bit lean) to me since in ontario our nox limit is about 400 compared to you 910, eitherway you passed that.

[wed3k]

id agree, when my o2 was going out on my civic it would only turn the CEL under a 50/15. cruising around the street the car ran okay however it would idle low.

[accordztech]

The nox was fine, he tested high on hc and co on the 50/15. It could be a missfire but he did fine on the 25/25 so I'd rule that out.

I'm not to experienced with a 50/15 test since in ontario we only run the 25/25, but your alloweble limits in georgia are pretty high compared to ontario on the 25/25.

Juding by your high hc and co on the 50/15 test 50% weight at 15mph seems like you oxygen sensor is fubar, remember gas cool the cylinder bores thus your lower noX number, and high hc/co, your running rich. 50% weight is about 870ish kg at 15mph is a lot of load, the engine has to work hard.

Someone more experience on a 50/15 test can provide better knowledge, I only do 25/25, and looking at your 25/25 everything seems normal other then the nox is around 458 which seems high(a bit lean) to me since in ontario our nox limit is about 400 compared to you 910, eitherway you passed that.

LOL I read it wrong, I stand corrected.

but 458 being lean for nox isnt right. If it was truely lean it would be much higher MUCH higher.

[wed3k]

meh could be clogged egr ports