C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Not Passing Emissions?

Thread Tools
 
Search this Thread
 
Old May 3, 2002 | 02:27 PM
  #1  
Fins2ya's Avatar
Fins2ya
Thread Starter
Advanced
 
Joined: Jan 2002
Posts: 58
Likes: 0
From: Chandler AZ
Default Not Passing Emissions?

Have 72 BB, It is not passing emissions when it is under load.

The mechanic has tried everything. But still is not passing. He adjusted carb,
and has had for two weeks.
Any ideas. Im from phoenix, Az
Thanks :confused:
Reply
Old May 3, 2002 | 02:34 PM
  #2  
Chinaski's Avatar
Chinaski
Team Owner
20 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Apr 2002
Posts: 26,563
Likes: 29
From: Northridge California
St. Jude Donor '14
Default Re: Not Passing Emissions? (Fins2ya)

I'm suprised there is emissions testing for a '72 in AZ. Here in CA if your car is 1973 or older, yer done with the smog testing fiasco...too bad mine is a '74...just had mine smogged & it passed...funny thing is that the car has all the smog equip removed....it is :bs that you even have to mess with it.
Reply
Old May 3, 2002 | 02:38 PM
  #3  
VettePower's Avatar
VettePower
Melting Slicks
 
Joined: Feb 2002
Posts: 2,625
Likes: 0
From: Cut n Shoot TX
Default Re: Not Passing Emissions? (eleven79)

You can move to Texas!! A 72 would be exempt from testing!! :yesnod:
Reply
Old May 3, 2002 | 03:27 PM
  #4  
zwede's Avatar
zwede
Race Director
25 Year Member
Loved
Community Favorite
Top Answer: 1
 
Joined: Sep 1999
Posts: 11,360
Likes: 382
From: Plano TX
Default Re: Not Passing Emissions? (Fins2ya)

I would need some more info. What are the readings at idle and load. What are the limits in your area.

Reply
Old May 3, 2002 | 03:32 PM
  #5  
427_Roadster's Avatar
427_Roadster
Burning Brakes
 
Joined: Aug 2001
Posts: 1,124
Likes: 0
Default Re: Not Passing Emissions? (Fins2ya)

Have 72 BB, It is not passing emissions when it is under load.

The mechanic has tried everything. But still is not passing. He adjusted carb,
and has had for two weeks.
Any ideas. Im from phoenix, Az
Thanks :confused:
Is your Vette all original, or have you done engine work? If it's stock I'd take it somewhere else for a second opinion. I can't help you much other than to say it shouldn't be hard to pass if the engine is tuned properly. in NJ we need below 700 on Hydrocarbon test and below 7% on carbonmonoxide to pass. With my carb tuned to spec and my timing at spec I blew 221 and 4.45% respectively.
Maybe a shop that specializes in muscle cars will know a little more about your setup? Worth a shot if this guy isn't delivering.
Good luck...
:cheers:
Tom
Reply
Old May 3, 2002 | 03:47 PM
  #6  
Kingt's Avatar
Kingt
Racer
 
Joined: Feb 2002
Posts: 276
Likes: 1
From: Arlington Texas
Default Re: Not Passing Emissions? (427_Roadster)

What's failing? HC or NOx?
Reply
Old May 3, 2002 | 04:05 PM
  #7  
bigvette1's Avatar
bigvette1
Drifting
20 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Jan 2002
Posts: 1,645
Likes: 11
From: Schaumburg IL
Default Re: Not Passing Emissions? (Fins2ya)

Listen to ZWEDE (Markus) and get him the info on your state and your results. I think he can help you. Also, if you are paying a mechanic to "adjust" stop throwing money away. Get someone once you have a plan that used the instruments to measure the components of the emissions.
Reply
Old May 3, 2002 | 04:30 PM
  #8  
Darkness's Avatar
Darkness
Le Mans Master
20 Year Member
 
Joined: Apr 2002
Posts: 7,281
Likes: 5
From: Boston
Default Re: Not Passing Emissions? (bigvette1)

Also, if you are paying a mechanic to "adjust" stop throwing money away. Get someone once you have a plan that used the instruments to measure the components of the emissions.
:yesnod:
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-1

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-2

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-3

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old May 3, 2002 | 05:00 PM
  #9  
VetteNut72's Avatar
VetteNut72
Pro
 
Joined: Nov 2000
Posts: 594
Likes: 0
From: Tucson AZ
Default Re: Not Passing Emissions? (Fins2ya)

Here in Arizona, there is an ammendment to the emissions testing law (HB2045) that will exempt all cars 20 years and older. Does anyone know the status of this ammendment?

Reply
Old May 4, 2002 | 08:50 AM
  #10  
Vettesic's Avatar
Vettesic
Drifting
25 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2000
Posts: 1,478
Likes: 38
From: Long Island NY
Default Re: Not Passing Emissions? (VetteNut72)

What a pain in the A**!! What part of emmissions is failing? Here's what I did....Supplied more air to carb. Eg; open a vacume line, Take test with CLEAN oil, new plugs, ect. Worked fo me. Good Luck, L8TER, Paul.
Reply

Get notified of new replies

To Not Passing Emissions?





All times are GMT -4. The time now is 06:48 AM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE