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Smog help!!!

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Old Nov 19, 2002 | 05:59 PM
  #1  
IROC-Z5.7TPI's Avatar
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From: Anaheim, CA
Car: 88 IROC-Z
Engine: 5.7 TPI
Transmission: 700 R-4
Smog help!!!

I recently failed smog due to the SES light, and the retarded timing, but besides that the car passed both ASM and all the other visual tests easily. Well I got the cars SES light to turn off and got my timing advanced so I thought I would just go and get it smogged, but when I got the car smogged it passed everything, minus the CO (%) test that measured 1.17 with the max. alowable being 0.71 at 15 MPH and it passed at 25 MPH, so I'm wondering if anyone can help me figure WTF is wrong now, I know its something to do with the CO2 but thats it, if anyone can give me advice please do.. thanks!!
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Old Nov 19, 2002 | 07:41 PM
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rezinn's Avatar
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From: California
How high were the HC? CO is converted to CO2 by the catalytic converter. How old is yours? Is your air pump connected and working?
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Old Nov 19, 2002 | 07:50 PM
  #3  
IROC-Z5.7TPI's Avatar
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From: Anaheim, CA
Car: 88 IROC-Z
Engine: 5.7 TPI
Transmission: 700 R-4
Originally posted by rezinn
How high were the HC? CO is converted to CO2 by the catalytic converter. How old is yours? Is your air pump connected and working?
My HC was 81@15 MPH and 78 @25MPH, i think the CAT is more than likely stock with a cat back exaust system, not positive though, and my air pump is connected and working.. thanks
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Old Nov 19, 2002 | 09:57 PM
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trans87's Avatar
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From: Cypress, SoCali
Car: 2006 Tacoma X-Runner
Engine: 4.0L DOHC V6
Transmission: 6-Speed Manual
Axle/Gears: 3:15 LSD
Originally posted by IROC-Z5.7TPI
My HC was 81@15 MPH and 78 @25MPH, i think the CAT is more than likely stock with a cat back exaust system, not positive though, and my air pump is connected and working.. thanks
When I looked under your car the cat was the stock cat that came with the car. You just had a catback, 3in tubing all the way back to a 80s Flowmaster with two 3in turndowns.
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