It's that time of the year again... FAILED emissions
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It's that time of the year again... FAILED emissions
So as the title states, I failed emissions today. I acquired this car in May, passing emissions with flying colors then, why the sudden change now?
Background info: the car is running non-sequential turbos with your typical, omnipresent minor oil leaks here and there.
25/25 test____________ 50/15 test
______reading, allowed___ reading, allowed
HC ppm___ 74, 132_______ 90, 136
CO%_____ 3.03 , 0.73___ 0.30, 0.76
NOx ppm__ 64, 945_______ 343, 1045
Emissions tech claims that due to his experience, a high carbon monoxide reading like that in the first test and not the second would indicate that I either needed to "change or replace the egr valve".
From my understanding, the egr valve was blocked off when the previous owner went non-sequential. To reiterate, I passed the car with flying colors a few months ago. Any help would be GREATLY appreciated!
Background info: the car is running non-sequential turbos with your typical, omnipresent minor oil leaks here and there.
25/25 test____________ 50/15 test
______reading, allowed___ reading, allowed
HC ppm___ 74, 132_______ 90, 136
CO%_____ 3.03 , 0.73___ 0.30, 0.76
NOx ppm__ 64, 945_______ 343, 1045
Emissions tech claims that due to his experience, a high carbon monoxide reading like that in the first test and not the second would indicate that I either needed to "change or replace the egr valve".
From my understanding, the egr valve was blocked off when the previous owner went non-sequential. To reiterate, I passed the car with flying colors a few months ago. Any help would be GREATLY appreciated!
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Air pump is working.
I'm trying to think of everything I've done to the car since May and it doesn't seem like much. I've been reading all day and I hear not adding idemitsu on the next fill up might help? Maybe an oil change?
I'm trying to think of everything I've done to the car since May and it doesn't seem like much. I've been reading all day and I hear not adding idemitsu on the next fill up might help? Maybe an oil change?
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Thanks for the advice so far guys.
After going through everything, I remembered that I adjusted my bov a month back because I thought I was experiencing compressor surge. If anything, I think I might have made it too soft, causing a boost leak, which would in turn cause me to run rich...
It may be a stretch but at this point I'm not willing to overlook anything. I'm adding boost leak/vacuum leak test to the list.
After going through everything, I remembered that I adjusted my bov a month back because I thought I was experiencing compressor surge. If anything, I think I might have made it too soft, causing a boost leak, which would in turn cause me to run rich...
It may be a stretch but at this point I'm not willing to overlook anything. I'm adding boost leak/vacuum leak test to the list.
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Could you explain the boost leak die to BOV? Was the BOV not holding pressure? Doesn't seem like it should be seeing much during an emissions test.
FWIW, I had a similar issue recently where the car wasn't passing at 25 mph, and wiring the airpump on at all times seemed to fix it.
FWIW, I had a similar issue recently where the car wasn't passing at 25 mph, and wiring the airpump on at all times seemed to fix it.
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hi there
I too failed my emissions test last week , purchased the FD a week prior and it came with a passed emissions over a year ago .
i passed the curb idle but failed the drive section, failed HC ppm , limit was 60 and i was 107 . failed NO ppm limit was 450 and i was 497. i did pass the CO% tho .
i barely failed so i wasn't too happy, so i put new spark plus in, new air filter , did an oil change , got rid of the old gas , fuel filter was changed ... even purchased that guaranteed to pass stuff , mostly ethanal in there.
would there be anything else i would need to be doing here??? any ideas would be awesome. thanks
I too failed my emissions test last week , purchased the FD a week prior and it came with a passed emissions over a year ago .
i passed the curb idle but failed the drive section, failed HC ppm , limit was 60 and i was 107 . failed NO ppm limit was 450 and i was 497. i did pass the CO% tho .
i barely failed so i wasn't too happy, so i put new spark plus in, new air filter , did an oil change , got rid of the old gas , fuel filter was changed ... even purchased that guaranteed to pass stuff , mostly ethanal in there.
would there be anything else i would need to be doing here??? any ideas would be awesome. thanks
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