my smog thread

[TheNextEpisode]

I'll try to get everything in order and not have to sport the racing number of shame, but that's probably what I'll end up doing.

I hope Triple-A handles that sort of thing so I can avoid the DMV.

[blvs125]

......smog due this month too........car has been ran since 6months ago.....just gonna pay to get it smog!!!! $$$

[timmy0tool]

yep the beauty of AAA is that you can do EVERYTHING that a DMV would do, WITHOUT the waiting. do it! and yes pay for the tags but get an extension for the smog.

i highly suggest to clean the EGR ports. if you look at my numbers, cleaning the ports drastically reduced the NO out on my H abling me to pass!

ok guys great news, i passed smog! here is what i did to remedy the situation.

first was to clean the EGR system. i removed my EGR valve, which is a pain w/o the right tools and cleaned it out using carb cleaner and a toothbrush. i made sure to remove all the carbon build-up that was there from the f22a. then i started to clean the EGR ports, WITHOUT removing or drilling the service plugs. this is what i did.

i poured seafoam into the runner which is the rectangular hole, not the circular hole where the exhaust gases come from. i poured until it overflowed. then i jacked the pass side WAY up to tilt the car/motor and get the liquid to pour into the ports and runners. then i let it sit for 5 minutes before starting the car. i temporarily hooked up the electrical plug and vac hose to the EGR so when i started the car it won't throw a CEL, but felt it hanging on the side. i let all the carbon and seafoam burn for 5 minutes. i looked at my exhaust tip and found bits of carbon chips that flew out. i would have thought the cat would filter that crap but i guess it didn't.

after the 5 minutes i started to spray carb cleaner into the same rectangular hole. as i sprayed the car would bog since i was flooding the fuel charge, so i would only give small doses of cleaner at a time. i would also hold the rev higher via throttle body and spray some more cleaner in there. i repeated this one more time for good measure. i also tried blowing compressed air into the runner when the motor was both off and on but that always led to carb cleaner splattering all over my face and engine bay . after i saw the shine of aluminum through the holes i was satisfied that it was clean and reinstalled everything back together. i hoped that the ports where as clean too.

next i retarded the timing a tad. if this is stock ->, mine was at _> which isn't too bad i think.


so i brought the car back to the same spot as my first test. i told the same guy that did my smog that i cleaned the EGR ports. this time it went much quicker and faster but i turned the car off while waiting for my turn. this allowed my cat to cool a bit.

when he got to it he still did the LPFET (low pressure fuel evaporative test) like last time but this time he also checked my timing. i was scared that he would find the timing was bad but he didn't and continued with the test (phew!). he did NOT hold the rpms high like he did last time to warm up the cat. he just started the test as he would a normal car. i was scared that the cat wasn't going to be hot enough but here are the results:

meas = amount measured
ave = average for passing cars
max = maximum allowable
(in parenthesis) = first test numbers

15mph test:
1991 (1807) RPM
%CO2 meas 13.39 (13.68)
%O2 meas 1.21 (0.92)
HC (PPM) max:116 ave:31 meas:113 (32)
CO(%) max:0.74 ave:0.10 meas:.17 (0.03)
NO(PPM) max:791 ave:237 meas:0397 (946)

25mph test:
2168 (2199) RPM
%CO2 meas 13.50 (13.60)
%O2 meas 1.26 (1.07)
HC (PPM) max:91 ave:20 meas:41 (34)
CO(%) max:0.62ave:0.09 meas:0.08 (0.03)
NO(PPM) max:730 ave:199 meas:0094 (826)

results:
PASS test


after looking at the numbers the %CO2, %O2, HC, and CO% increased from the last time probably due to not heating the cat more . the NO number dropped A LOT by just cleaning the EGR and retarding the timing. amazing!

i did not change anything else other than what i mentioned above. as you can see it is 100% possible to smog a jdm motor WITH a jdm ecu! thanks to all who helped me get this done. hopefully someone finds this stuff important in the future!

[bmxicansd]

......smog due this month too........car has been ran since 6months ago.....just gonna pay to get it smog!!!! $$$

Smog was due on my cb last month..

[GHOST 2.2]

my registration is due by october 26. i got the infamous test only paper

[blvs125]

my registration is due by october 26. i got the infamous test only paper

me too again........

sux...i guess im high risk...gross polluter

[timmy0tool]

all cars older than 1996 are test only, so we all get it. that's OBDI for you!

also if you're car is older than 5 years then i believe you will have to smog, as we can see in jed's case right?

[TheNextEpisode]

My failure ended up being due to a poor connection on the O2 sensor extension I made 2 years ago when I did the H swap. Of course, I figured that out a week after I replaced my cat (180 bucks).

Anyway, with a cleared EGR system, new cat, and functioning O2, the car passed no sweat.


But of course all of this was just with a lamesauce F22.


Good luck to everyone else in the smog check jam, right now. The hassle is all worth it in the end, I guess. High population/car density pretty much requires strict emissions control to maintain any sort of acceptable living conditions.

[ikayto]

seems like an oil change is probably the safe thing to do with the whole spraying carb cleaner/seafoam into the egr opening. correct? ahah

i mean i can imagine all the debri making your oil dirty.

[timmy0tool]

yeah wilson, i actually recommend an oil change and spark plug change after a seafoam treatment.

[ikayto]

cool, just wanted to be sure- going to attempt it this weekend lol.

[blvs125]

cool, just wanted to be sure- going to attempt it this weekend lol.

so how did it go??????

my smog guy got shut down.... now i need a smog asap.....

[ikayto]

so how did it go??????

my smog guy got shut down.... now i need a smog asap.....

for f22a6 intake manifold, i couldnt do the timmy0tool egr cleaning. The valve hole is too far from the ports to have carb cleaner flow in that direction. No matter how many difference configurations I tried, the level of carb cleaner never went down indicating it flowed to the ports.

Ended up just drill out all my plugs and cleaning them with a wire hanger and sea foam.

PASSED SMOG:

NOx before: 1400 and 783
NOx After: 200 and 170
about 80% decrease!

Passed HC and CO well below max as well. O2 levels went down b/c I guess the egr is cleaning up the exhaust of any oxygen left over.

[timmy0tool]

^ nice work wilson!

[thecrow7841]

so my daily beater failed smog due to Check engine light=o2, it turn out to be a poor connection on the o2 so got that fixed.

Ignition timing= Mechanical Problem

and it failed Nox.
----------No (ppm)
---------Max---GP---Meas
15 MPH--873--2108--2707
25 MPH--812--1908--2210