Has anyone passed a smog test using an afc with high HC

[ob1]

I failed my smog by having high HC and C0 . HC was 180 max 88 I was wondering if I could lower the fuel going into the engine to lower HC with afc.

[ZOMG.SR20]

advance the timing

it has to do with your car running lean thats why you have a HC problem

[ob1]

Thanks for your response but my timing was @ 15 I changed it to 20 I never can get the car once I unplug the tps to idle at 650rpm. I thought if I advance the timing this would raise hc levels. Also I thought high hc levels ment unbured gas a rich condition not lean.
Modified by ob1 at 6:55 PM 3/30/2010

[Wc240]

if you have a very lean condition, you will get a lean misfire. that will raise your HC, but also everything else. you could probably get away with it using afc, but you have to have an understanding of the other gasses and whats goin to affect each one. why dont you just try diaging the pig rich condition you seem to have? whats the other gasses?

[ob1]

Here are my test results 15 mph c02 14.5 02 0 hc 180 max 88 c0 .47 max .52 n0 83 max 70425mph c02 14.4 02 0 hc 165 max 53 c0 .53 max.50 n0 56 max 738 .after the test I have changed my o2 sensor .The plugs are new cap rotor new wires new about 6months old . I turned down fuel on afc 2% now water vapor is coming from tailpipe wich is a good sign please help need to get smog before the take my ride thanks
Modified by ob1 at 6:06 AM 3/31/2010

[r3v_v3ng3]

was this test only designated smog test? if so use the cap program and the state will pay up to $500 to pass ur emission. make sure everything is stock though, they're very strict

[ob1]

well I failed again today hc still too high but not by much. hc was 116 max is 88 c0 .25 nox was 0 this was @ 15mph the 25 mph test was hc was 92 max is 53 c0 .27 nox was 19 I changed the following items plugs o2 sensor I did not change the cap and rotor I will thou now I looked @ them I also put 1quart of denature alcohol in the 1/4 tank of gas. I ckecked the timing I just don't know if I'm doing it corectly. I can't get the car to idel @ 650 moving the screw only gets it to around 900. so I don't know if timming is correct every time I go to smog it says 15 deg. I know its has to be 20 + - 2 deg. please someone help me don't have a lot of money now now I have to hide my car because it might get towed tags are 9 months late

[ob1]

if someone would give me some insight to this would be greatlly apriciated.

[the converted]

If you can't get the idle down, and it's running lean, I'm going to guess that you have a vac leak somewhere.

[ob1]

how do i check for vacuum leaks maybe spraying some carb cleaner around hoses or mating surfaces?

[the converted]

Exactly.

[ob1]

I sprayed carb cleaner everywhere no leaks please help

[NiceLyphe]

Umm..Lick and Stick man, You gotta know someone that will do it if you throw them a few bucks

[ob1]

Well I finally passed smog . I purchased an Innovative wideband turned down the fuel 6% @ 1000 rpm it worked brought the hc down to a passing level.

[ob1]

Well I finally passed smog . I purchased an Innovative wideband turned down the fuel 6% @ 1000 rpm it worked brought the hc down to a passing level.

[ob1]

Well I finally passed smog . I purchased an Innovative wideband turned down the fuel 6% @ 1000 rpm it worked brought the hc down to a passing level.