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10-24-2009, 08:15 PM
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#1 |
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Registered User
Join Date: Mar 2008
Location: phoenix az.
Posts: 53
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failing smog in az
hi all i have a 70 gmc 1/2 ton 383 eddy intake headers mild cam i pass everyting but idle hc i have allready swaped out the intake carb recuved the dizzy and im out of things i can think of so what are your thoghts any help is good help thanks
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10-24-2009, 08:23 PM
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#2 |
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Registered User
Join Date: Jan 2008
Location: Tejas
Posts: 691
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Re: failing smog in az
Hydro-carbons? Tune the carb and get some cheap cats if necessary.
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'72 cheyenne super step, '05 long bed gmc |
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10-24-2009, 09:04 PM
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#3 |
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Senior Member
Join Date: Jan 2005
Location: SUNNY WARM BIKE RIDING COTTONWOOD ARIZONA
Posts: 2,097
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Re: failing smog in az
full can of acetone in tank.... dropped my co from 23% to 6% and my HC from passing to almost 0 (.96)... idle up a bit (1500) , at op temp and dont sit in line and idle... good luck
Last edited by QKENUF4U; 10-24-2009 at 09:04 PM. |
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10-25-2009, 01:39 AM
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#4 |
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Registered User
Join Date: Aug 2009
Location: Tomball, TX
Posts: 578
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Re: failing smog in az
there was a post like this a few weeks ago, it had alot of good info couple pages long, so if you could find that I'm sure that'd help you out alot. I don't remember the name of it but if you just search failed smog test you'll prolly find something.
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'68 C10 LWB 6.2NA/NP833 3.73's |
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