failed smog thread.....

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Mar 15, 2011 | 01:33 PM
  #1  
my hc(ppm) is too high.. what do I do?!

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Mar 15, 2011 | 01:59 PM
  #2  
Re: failed smog thread.....
Notice your NOX is low and HC high, that usually means the 02 might not be working, or a bad injector, check them with an ohm meter, should be 12-18 ohms.

When the NOX is low, that indicates cool combustion ie. rich mixture.
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Mar 15, 2011 | 02:27 PM
  #3  
Re: failed smog thread.....
i have brand new injectors bosch III old ones were ohming low...maybe it killed my o2?
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Mar 15, 2011 | 02:32 PM
  #4  
Re: failed smog thread.....
well when i failed emissions on my car everything failed. So what i did was i bought some techron fuel injector cleaner and filled my tank then poured it in and ran it for about 100 miles then i bumped my idle up to about 900 and the day i was scheduled to take the sniffer test i drove it on the freeway for about a half hour till it got nice and warm and then went right to the testing station and had them pull it in without shutting off the car. Since i did that it passed with flying colors also check your plugs and timing
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Mar 15, 2011 | 05:06 PM
  #5  
Re: failed smog thread.....
Which of your cars is that so I can add it to my chart.
make, model, year, engine, year, trans,
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Mar 15, 2011 | 05:56 PM
  #6  
Re: failed smog thread.....
Quote: i have brand new injectors bosch III old ones were ohming low...maybe it killed my o2?
If the engine is stock, are you using 22lbs injectors?
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Mar 15, 2011 | 08:00 PM
  #7  
Re: failed smog thread.....
That was my issue as well.I retarded the timing a couple (maybe more) degrees & raised the idle speed a couple hundred too.Plus the unsual, inpect/clean plugs,check/replace cap & rotor.I also poured a bottle of that Lucas fuel/octane booster thing.
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Mar 16, 2011 | 12:17 AM
  #8  
Re: failed smog thread.....
theyre 22lb injectors the car has a 350 but is tested as 90 irocz 305 700r4
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Mar 16, 2011 | 12:19 AM
  #9  
Re: failed smog thread.....
oh and i picked up the totalled 02 ss today will post pics tomorrow
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Mar 18, 2011 | 12:29 AM
  #10  
Re: failed smog thread.....
Could having the fan running with key on have had hurt my #s? I go for a retest tomorrow................
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Mar 18, 2011 | 12:33 AM
  #11  
Re: failed smog thread.....
do you have the A.I.R. system in? I didn't when I inspected and that's how my smog failed.... just throwin' the idea out there
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Mar 18, 2011 | 05:00 PM
  #12  
Re: failed smog thread.....
Quote: Could having the fan running with key on have had hurt my #s? I go for a retest tomorrow................

That does typically fail you. It causes the car to run rich and throws everything else off
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Mar 18, 2011 | 08:14 PM
  #13  
Re: failed smog thread.....
My car likes to run about 140-160 around town.So i took the air dam off to spike the temp into the 200-210 range.
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Mar 18, 2011 | 09:31 PM
  #14  
Re: failed smog thread.....
swapped wires, cap, rotor, coil, plugs, and 02 sensor still didnt pass. ended up paying under the table, no lube.
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Mar 18, 2011 | 10:03 PM
  #15  
Re: failed smog thread.....
I know the feeling.Least now you dont have to worry about the registration while doing the swap.
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