C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Failed emissions 1986

Thread Tools
 
Search this Thread
 
Old Mar 17, 2006 | 12:06 PM
  #1  
Bear86's Avatar
Bear86
Thread Starter
Instructor
 
Joined: Jun 2002
Posts: 249
Likes: 0
From: Nashville TN
Default Failed emissions 1986

The CO is 1.43 should be less than 1.20. Any ideas?

Thanks Larry
Reply
Old Mar 17, 2006 | 12:21 PM
  #2  
TM-Z06's Avatar
TM-Z06
Safety Car
 
Joined: Sep 2003
Posts: 3,692
Likes: 5
From: Hayward CA
Default

List your modifications. How old are your catalytic convertors? Also, when was the last time you changed the following - fuel filter, O2 sensors, EGR valve, spark plugs, wires, cap and rotor???
Reply
Old Mar 17, 2006 | 01:58 PM
  #3  
86PACER's Avatar
86PACER
Le Mans Master
20 Year Member
 
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Default


Did you arrive with the car hot?
Reply
Old Mar 17, 2006 | 02:47 PM
  #4  
cv67's Avatar
cv67
Team Owner
15 Year Member
 
Joined: Oct 2004
Posts: 81,241
Likes: 3,062
From: altered state
St. Jude Donor '05
Default

1 quart of denatured alcohol (4.95 at Wallmart) to a full tank of gas. Its a bandaid, but it works.
Reply
Old Mar 17, 2006 | 03:00 PM
  #5  
jcsr72's Avatar
jcsr72
Instructor
 
Joined: Sep 2005
Posts: 107
Likes: 0
From: Arizona
Default

You need to be in tuned up shape, have a 195 degree thermostat, a HOT (not warm) engine, decent cats. Have you removed any emmisions equipment? Also, scan the ECM, it may be throwing a preliminary code.
Reply
Old Mar 17, 2006 | 05:37 PM
  #6  
blown87's Avatar
blown87
Race Director
 
Joined: Sep 2005
Posts: 13,269
Likes: 0
From: Sharpsburg Georgia
GA Events Coordinator
Default

what are the rest of the #'s
Reply

Get notified of new replies

To Failed emissions 1986





All times are GMT -4. The time now is 08:48 AM.

story-0
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-1
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-2
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-3
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-4
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-5
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-6
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-7
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-8
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE
story-9
7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette

Slideshow: Check out these easy-to-install upgrades from Extreme Online Store that reshape the look and feel of the C6 Corvette.

By Pouria Savadkouei | 2026-03-23 17:00:27


VIEW MORE